remove k8s.io/kubernetes dependency

k8s.io/kubernetes can be replaced with a fork of the single package that
cilium depends on. Dropping this dependency from our go modules will make
the go.mod file a lot simpler.

Signed-off-by: André Martins <andre@cilium.io>

go.mod

@@ -8,6 +8,7 @@ go 1.13
 
 // direct dependencies
 require (
+	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
 	github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a
 	github.com/aws/aws-sdk-go-v2 v0.18.0
@@ -16,11 +17,14 @@ require (
 	github.com/census-instrumentation/opencensus-proto v0.2.1 // indirect
 	github.com/cilium/arping v1.0.1-0.20190728065459-c5eaf8d7a710
 	github.com/cilium/ebpf v0.0.0-20191113100448-d9fb101ca1fb
+	github.com/cilium/ipam v0.0.0-20200217195329-a46f8d55f9db
 	github.com/cilium/proxy v0.0.0-20191113190709-4c7b379792e6
 	github.com/containernetworking/cni v0.7.1
 	github.com/containernetworking/plugins v0.8.2
 	github.com/davecgh/go-spew v1.1.1
+	github.com/docker/distribution v2.7.1+incompatible // indirect
 	github.com/docker/docker v0.7.3-0.20190327010347-be7ac8be2ae0
+	github.com/docker/go-connections v0.3.0 // indirect
 	github.com/docker/libnetwork v0.8.0-dev.2.0.20190624125649-f0e46a78ea34
 	github.com/envoyproxy/protoc-gen-validate v0.1.0 // indirect
 	github.com/fatih/color v1.7.0
@@ -50,11 +54,15 @@ require (
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
 	github.com/kevinburke/ssh_config v0.0.0-20190725054713-01f96b0aa0cd
 	github.com/kr/pretty v0.1.0
+	github.com/mattn/go-isatty v0.0.9 // indirect
 	github.com/mattn/go-shellwords v1.0.5
 	github.com/miekg/dns v1.1.4
+	github.com/morikuni/aec v0.0.0-20170113033406-39771216ff4c // indirect
 	github.com/onsi/ginkgo v1.10.1
 	github.com/onsi/gomega v1.7.0
 	github.com/op/go-logging v0.0.0-20160315200505-970db520ece7
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/optiopay/kafka v0.0.0-20180809090225-01ce283b732b
 	github.com/pborman/uuid v1.2.0
 	github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
@@ -68,6 +76,7 @@ require (
 	github.com/shirou/gopsutil v0.0.0-20181107111621-48177ef5f880
 	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/cobra v0.0.5
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.6.1
 	github.com/vishvananda/netlink v1.0.1-0.20191113183427-d71301a47b60
@@ -89,7 +98,6 @@ require (
 	k8s.io/client-go v8.0.0+incompatible
 	k8s.io/code-generator v0.0.0
 	k8s.io/klog v1.0.0
-	k8s.io/kubernetes v1.17.3
 	sigs.k8s.io/yaml v1.1.0
 )
 
@@ -166,6 +174,7 @@ replace (
 	github.com/cheekybits/genny => github.com/cheekybits/genny v0.0.0-20170328200008-9127e812e1e9
 	github.com/cilium/arping => github.com/cilium/arping v1.0.1-0.20190728065459-c5eaf8d7a710
 	github.com/cilium/ebpf => github.com/cilium/ebpf v0.0.0-20191113100448-d9fb101ca1fb
+	github.com/cilium/ipam => github.com/cilium/ipam v0.0.0-20200217195329-a46f8d55f9db
 	github.com/cilium/proxy => github.com/cilium/proxy v0.0.0-20191113190709-4c7b379792e6
 	github.com/circonus-labs/circonus-gometrics => github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible
 	github.com/circonus-labs/circonusllhist => github.com/circonus-labs/circonusllhist v0.1.3

pkg/aws/ec2/mock/mock.go

@@ -1,4 +1,4 @@
-// Copyright 2019 Authors of Cilium
+// Copyright 2019-2020 Authors of Cilium
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -25,8 +25,8 @@ import (
 	"github.com/cilium/cilium/pkg/lock"
 	"github.com/cilium/cilium/pkg/uuid"
 
+	"github.com/cilium/ipam/service/ipallocator"
 	"golang.org/x/time/rate"
-	"k8s.io/kubernetes/pkg/registry/core/service/ipallocator"
 )
 
 type eniMap map[string]*v2.ENI

pkg/ipam/hostscope.go

@@ -1,4 +1,4 @@
-// Copyright 2017-2019 Authors of Cilium
+// Copyright 2017-2020 Authors of Cilium
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -21,8 +21,7 @@ import (
 
 	"github.com/cilium/cilium/pkg/ip"
 
-	k8sAPI "k8s.io/kubernetes/pkg/apis/core"
-	"k8s.io/kubernetes/pkg/registry/core/service/ipallocator"
+	"github.com/cilium/ipam/service/ipallocator"
 )
 
 type hostScopeAllocator struct {
@@ -67,14 +66,16 @@ func (h *hostScopeAllocator) AllocateNext(owner string) (*AllocationResult, erro
 func (h *hostScopeAllocator) Dump() (map[string]string, string) {
 	var origIP *big.Int
 	alloc := map[string]string{}
-	ral := k8sAPI.RangeAllocation{}
-	h.allocator.Snapshot(&ral)
+	_, data, err := h.allocator.Snapshot()
+	if err != nil {
+		return nil, fmt.Sprintf("Unable to get a snapshot of the allocator")
+	}
 	if h.allocCIDR.IP.To4() != nil {
 		origIP = big.NewInt(0).SetBytes(h.allocCIDR.IP.To4())
 	} else {
 		origIP = big.NewInt(0).SetBytes(h.allocCIDR.IP.To16())
 	}
-	bits := big.NewInt(0).SetBytes(ral.Data)
+	bits := big.NewInt(0).SetBytes(data)
 	for i := 0; i < bits.BitLen(); i++ {
 		if bits.Bit(i) != 0 {
 			ip := net.IP(big.NewInt(0).Add(origIP, big.NewInt(int64(uint(i+1)))).Bytes()).String()

pkg/k8s/utils/utils.go

@@ -1,4 +1,4 @@
-// Copyright 2018 Authors of Cilium
+// Copyright 2018-2020 Authors of Cilium
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -17,7 +17,6 @@ package utils
 import (
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/kubernetes/pkg/kubelet/types"
 )
 
 // ExtractNamespace extracts the namespace of ObjectMeta.
@@ -51,15 +50,3 @@ func GetObjNamespaceName(obj metav1.Object) string {
 
 	return ns + "/" + obj.GetName()
 }
-
-// GetObjUID returns the object's namespace and name.
-func GetObjUID(obj metav1.Object) string {
-	return GetObjNamespaceName(obj) + "/" + string(obj.GetUID())
-}
-
-// IsInfraContainer returns true if the given set of labels represent a infra
-// container.
-func IsInfraContainer(labels map[string]string) bool {
-	return labels[types.KubernetesContainerNameLabel] == "POD"
-
-}