Remove references to dep.

* Updates DEVELOPMENT.md to reference Go modules documentation
* Updates update-deps.sh to run Go modules pruner.
* Removes vendor directory.

DEVELOPMENT.md

@@ -80,15 +80,18 @@ _Adding the `upstream` remote sets you up nicely for regularly
 You must install these tools:
 
 1. [`go`](https://golang.org/doc/install): The language Tekton Pipelines is
-   built in
+   built in. Recommended version >= 1.13 due to dependency on [Go
+   Modules](https://github.com/golang/go/wiki/Modules).
 1. [`git`](https://help.github.com/articles/set-up-git/): For source control
-1. [`dep`](https://github.com/golang/dep): For managing external Go
-   dependencies. - Please Install dep v0.5.0 or greater.
 1. [`ko`](https://github.com/google/ko): For development. `ko` version v0.1 or
    higher is required for `triggers` to work correctly.
 1. [`kubectl`](https://kubernetes.io/docs/tasks/tools/install-kubectl/): For
    interacting with your kube cluster
 
+Tekton Triggers uses modules for tracking dependencies. See [Go Modules Quick
+Start](https://github.com/golang/go/wiki/Modules#quick-start) for more details
+on day-to-day usage of modules.
+
 Your [`$GOPATH`] setting is critical for `ko apply` to function properly: a
 successful run will typically involve building pushing images instead of only
 configuring Kubernetes resources.

go.mod

@@ -3,82 +3,37 @@ module github.com/tektoncd/triggers
 go 1.13
 
 require (
-	cloud.google.com/go v0.43.0
-	contrib.go.opencensus.io/exporter/prometheus v0.1.0
-	contrib.go.opencensus.io/exporter/stackdriver v0.12.4
-	github.com/aws/aws-sdk-go v1.22.0
-	github.com/beorn7/perks v1.0.1
-	github.com/census-instrumentation/opencensus-proto v0.2.1
-	github.com/davecgh/go-spew v1.1.1
-	github.com/evanphx/json-patch v4.5.0+incompatible
-	github.com/ghodss/yaml v1.0.0
-	github.com/gobuffalo/envy v1.7.0
-	github.com/gogo/protobuf v1.2.1
-	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6
-	github.com/golang/protobuf v1.3.2
-	github.com/google/btree v1.0.0
+	contrib.go.opencensus.io/exporter/prometheus v0.1.0 // indirect
+	contrib.go.opencensus.io/exporter/stackdriver v0.12.4 // indirect
+	github.com/aws/aws-sdk-go v1.22.0 // indirect
+	github.com/evanphx/json-patch v4.5.0+incompatible // indirect
+	github.com/gobuffalo/envy v1.7.0 // indirect
+	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
 	github.com/google/go-cmp v0.3.0
+	github.com/google/go-containerregistry v0.0.0-20191029173801-50b26ee28691 // indirect
 	github.com/google/go-github v17.0.0+incompatible
-	github.com/google/go-querystring v1.0.0
-	github.com/google/gofuzz v1.0.0
-	github.com/google/licenseclassifier v0.0.0-20190711054124-c3068f13fcc3
-	github.com/google/uuid v1.1.1
-	github.com/googleapis/gnostic v0.3.0
-	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79
-	github.com/hashicorp/golang-lru v0.5.3
-	github.com/imdario/mergo v0.3.7
-	github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af
-	github.com/joho/godotenv v1.3.0
-	github.com/json-iterator/go v1.1.7
-	github.com/knative/test-infra v0.0.0-20190625174906-69af8af1d3fe
-	github.com/markbates/inflect v1.0.4
-	github.com/mattbaird/jsonpatch v0.0.0-20171005235357-81af80346b1a
-	github.com/matttproud/golang_protobuf_extensions v1.0.1
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
-	github.com/modern-go/reflect2 v1.0.1
-	github.com/petar/GoLLRB v0.0.0-20190514000832-33fb24c13b99
-	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
-	github.com/pkg/errors v0.8.1
-	github.com/prometheus/client_golang v1.1.0
-	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90
-	github.com/prometheus/common v0.6.0
-	github.com/prometheus/procfs v0.0.3
-	github.com/rogpeppe/go-internal v1.3.0
-	github.com/sergi/go-diff v1.0.0
-	github.com/spf13/pflag v1.0.3
+	github.com/google/go-querystring v1.0.0 // indirect
+	github.com/google/uuid v1.1.1 // indirect
+	github.com/googleapis/gnostic v0.3.0 // indirect
+	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79 // indirect
+	github.com/hashicorp/golang-lru v0.5.3 // indirect
+	github.com/imdario/mergo v0.3.7 // indirect
+	github.com/markbates/inflect v1.0.4 // indirect
+	github.com/mattbaird/jsonpatch v0.0.0-20171005235357-81af80346b1a // indirect
+	github.com/prometheus/client_golang v1.1.0 // indirect
 	github.com/tektoncd/pipeline v0.6.0
-	github.com/tektoncd/plumbing v0.0.0-20190723185055-a268939d0be5
 	github.com/tidwall/gjson v1.3.2
-	github.com/tidwall/match v1.0.1
-	github.com/tidwall/pretty v1.0.0
 	github.com/tidwall/sjson v1.0.4
-	go.opencensus.io v0.22.0
-	go.uber.org/atomic v1.4.0
-	go.uber.org/multierr v1.1.0
+	go.uber.org/atomic v1.4.0 // indirect
+	go.uber.org/multierr v1.1.0 // indirect
 	go.uber.org/zap v1.9.2-0.20180814183419-67bc79d13d15
-	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
-	golang.org/x/net v0.0.0-20190724013045-ca1201d0de80
-	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
-	golang.org/x/sync v0.0.0-20190423024810-112230192c58
-	golang.org/x/sys v0.0.0-20190804053845-51ab0e2deafa
-	golang.org/x/text v0.3.2
-	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
-	golang.org/x/tools v0.0.0-20190807164442-cae9aa543496
+	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4 // indirect
 	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7
-	google.golang.org/api v0.7.1-0.20190805211801-b7b1a549a9ef
-	google.golang.org/appengine v1.6.1
-	google.golang.org/genproto v0.0.0-20190716160619-c506a9f90610
-	google.golang.org/grpc v1.22.1
-	gopkg.in/inf.v0 v0.9.1
-	gopkg.in/yaml.v2 v2.2.2
+	google.golang.org/api v0.7.1-0.20190805211801-b7b1a549a9ef // indirect
+	gopkg.in/yaml.v2 v2.2.4
 	k8s.io/api v0.0.0-20190528110122-9ad12a4af326
 	k8s.io/apimachinery v0.0.0-20190221084156-01f179d85dbc
 	k8s.io/client-go v0.0.0-20180927013249-97dc22a90a29
-	k8s.io/code-generator v0.0.0-20181128191024-b1289fc74931
-	k8s.io/gengo v0.0.0-20190327210449-e17681d19d3a
-	k8s.io/klog v0.2.0
-	k8s.io/kube-openapi v0.0.0-20190722073852-5e22f3d471e6
 	knative.dev/caching v0.0.0-20190719140829-2032732871ff
 	knative.dev/pkg v0.0.0-20190719141030-e4bc08cc8ded
 )