all: remove year from copyright notice

Hubble source files have a header with a SPDX tag and a copyright
notice, stating that the copyright goes to the Authors of Hubble, and
containing a year or year range to specify to what period the copyright
extends.

The year or year range are not necessary in this statement. The CNCF
recommends not using the year or the copyright symbol, to keep files
easy to process [0]. The history of the source code is conserved through
the version control system, and is easily available for all to check
out.

[0] https://github.com/cncf/foundation/blob/main/copyright-notices.md#copyright-notices

Drop the year and year range for the entire codebase.

The files were processed as follows:

$ cat years.sed
6, $ b
/^\(#\|\/\/\|\/\*\) *SPDX-License-Identifier: \(GPL-2\.0\|Apache-2\.0\)\( \*\/\)\?$/ {
    N; s/Copyright .* Authors of Hubble/Copyright Authors of Hubble/
}
/^\(#\|\/\/\|\/\*\) *Copyright .* Authors of Hubble\( \*\/\)\?$/ {
    N; {
	/\(#\|\/\/\|\/\*\) *SPDX-License-Identifier: \(GPL-2\.0\|Apache-2\.0\)\( \*\/\)\?$/ s/Copyright .* Authors of Hubble/Copyright Authors of Hubble/
    }
}
$ find main.go cmd pkg -type f -print0 | xargs -0 -P 8 sed -i -f years.sed

Also add copyright headers to some Go source files that were previously
missing the headers.

Signed-off-by: Tobias Klauser <tobias@cilium.io>

cmd/common/config/flags.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/common/config/viper.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/common/conn/conn.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package conn
 

cmd/common/conn/tls.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package conn
 

cmd/common/doc.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 // Package common implements utilities that are meant to be used commonly by
 // all sub-commands to ensure consistency across them.

cmd/common/template/usage.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package template
 

cmd/common/template/usage_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package template
 

cmd/common/validate/doc.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 // Package validate implements utilities to validate the command configuration
 // by, for example, validating a set of given options.

cmd/common/validate/flag.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package validate
 

cmd/common/validate/tls.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package validate
 

cmd/config/config.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/config/get.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/config/reset.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/config/set.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/config/view.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package config
 

cmd/list/list.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package list
 

cmd/list/node.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package list
 

cmd/list/node_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package list
 

cmd/observe/agent_events.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/agent_events_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/debug_events.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/debug_events_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/events.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/flows.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019-2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/flows_filter.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019-2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/flows_filter_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/flows_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/identity.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2022 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/io_reader_observer.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/io_reader_observer_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/observe.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019-2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/workload.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2022 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/observe/workload_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2022 Authors of Hubble
+// Copyright Authors of Hubble
 
 package observe
 

cmd/record/record.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package record
 

cmd/record/tty_linux.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 //go:build linux
 

cmd/record/tty_others.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 //go:build !linux
 

cmd/reflect/reflect.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package reflect
 

cmd/root.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2017-2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package cmd
 

cmd/status/status.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019 Authors of Hubble
+// Copyright Authors of Hubble
 
 package status
 

cmd/version/version.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package version
 

cmd/watch/peer.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package watch
 

cmd/watch/peer_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package watch
 

cmd/watch/watch.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package watch
 

main.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019 Authors of Hubble
+// Copyright Authors of Hubble
 
 // Ensure build fails on versions of Go that are not supported by Hubble.
 // This build tag should be kept in sync with the version specified in go.mod.

pkg/defaults/defaults.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package defaults
 

pkg/logger/logger.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package logger
 

pkg/printer/color.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package printer
 

pkg/printer/formatter.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package printer
 

pkg/printer/formatter_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package printer
 

pkg/printer/options.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019-2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package printer
 

pkg/printer/printer.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019-2021 Authors of Hubble
+// Copyright Authors of Hubble
 
 package printer
 

pkg/printer/printer_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019 Authors of Hubble
+// Copyright Authors of Hubble
 
 package printer
 

pkg/time/time.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019 Authors of Hubble
+// Copyright Authors of Hubble
 
 package time
 

pkg/time/time_test.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2019 Authors of Hubble
+// Copyright Authors of Hubble
 
 package time
 

pkg/version.go

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright 2020 Authors of Hubble
+// Copyright Authors of Hubble
 
 package pkg