Update k8s client-go to v6.0.0 (#1340)

* Update k8s client-go to v6.0.0

This fix updates k8s client-go to v6.0.0 as CoreDNS is supported
in 1.9 and v6.0.0 is the recommended version.

There are quite some massive changes that need to be made:
1. k8s.io/client-go/pkg/api/v1 has been changed to k8s.io/api/v1 (repo changed from `client-go` to `api`)
2. kubernetes.Clientset adds one extra layer, so that `kubernetes.Clientset.Services()` and like has been changed to `kubernetes.Clientset.CoreV1().Services()`

Also, we have to stick with specific commits of `k8s.io/apimachinery` and the newly introduced `k8s.io/api`
because go dep still could not figure out the right version to fetch.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update vendor with `dep ensure --update` and `dep prune`

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

vendor/github.com/coreos/etcd/.gitignore

@@ -1,16 +1,22 @@
 /agent-*
 /coverage
+/covdir
 /gopath
 /gopath.proto
 /go-bindata
+/release
 /machine*
 /bin
+.Dockerfile-test
 .vagrant
 *.etcd
+*.log
 /etcd
 *.swp
 /hack/insta-discovery/.env
 *.test
 tools/functional-tester/docker/bin
+hack/scripts-dev/docker-dns/.Dockerfile
+hack/scripts-dev/docker-dns-srv/.Dockerfile
 hack/tls-setup/certs
 .idea

vendor/github.com/coreos/etcd/.semaphore.sh

@@ -2,7 +2,7 @@
 
 TEST_SUFFIX=$(date +%s | base64 | head -c 15)
 
-TEST_OPTS="RELEASE_TEST=y INTEGRATION=y PASSES='build unit release integration_e2e functional' MANUAL_VER=v3.2.9"
+TEST_OPTS="RELEASE_TEST=y INTEGRATION=y PASSES='build unit release integration_e2e functional' MANUAL_VER=v3.2.11"
 if [ "$TEST_ARCH" == "386" ]; then
 	TEST_OPTS="GOARCH=386 PASSES='build unit integration_e2e'"
 fi
@@ -13,4 +13,4 @@ docker run \
 	gcr.io/etcd-development/etcd-test:go1.8.5 \
 	/bin/bash -c "${TEST_OPTS} ./test 2>&1 | tee test-${TEST_SUFFIX}.log"
 
-! egrep "(--- FAIL:|panic: test timed out|appears to have leaked|Too many goroutines)" -B50 -A10 test-${TEST_SUFFIX}.log
+! egrep "(--- FAIL:|panic: test timed out|appears to have leaked)" -B50 -A10 test-${TEST_SUFFIX}.log

vendor/github.com/coreos/etcd/glide.lock

@@ -1,5 +1,5 @@
-hash: 94008ff434d6e211d8dbd412d81f123c5f43bb41b5267a50612ff34b8879b796
-updated: 2017-12-04T14:22:51.678346-08:00
+hash: 57308341a6ff76ce7960119ca6f589d2f5476c056f1f38f9a32552d9e68509d8
+updated: 2017-12-19T13:02:46.509863-08:00
 imports:
 - name: github.com/beorn7/perks
   version: 4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9
@@ -149,7 +149,7 @@ imports:
   - googleapis/api/annotations
   - googleapis/rpc/status
 - name: google.golang.org/grpc
-  version: 9a2334748bab9638f1480ad4f0ac6ac0c6c3a486
+  version: 5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e
   subpackages:
   - balancer
   - codes

vendor/github.com/coreos/etcd/glide.yaml

@@ -40,7 +40,7 @@ import:
 - package: github.com/google/btree
   version: 925471ac9e2131377a91e1595defec898166fe49
 - package: github.com/grpc-ecosystem/grpc-gateway
-  version: v1.3
+  version: v1.3.0
   subpackages:
   - runtime
   - runtime/internal
@@ -97,7 +97,7 @@ import:
   subpackages:
   - rate
 - package: google.golang.org/grpc
-  version: v1.7.4
+  version: v1.7.5
   subpackages:
   - codes
   - credentials

vendor/github.com/coreos/etcd/test

@@ -148,7 +148,7 @@ function e2e_pass {
 
 function integration_extra {
 	go test -timeout 15m -v ${RACE} -cpu 1,2,4 "$@" "${REPO_PATH}/client/integration"
-	go test -timeout 15m -v ${RACE} -cpu 1,2,4 "$@" "${REPO_PATH}/clientv3/integration"
+	go test -timeout 20m -v ${RACE} -cpu 1,2,4 "$@" "${REPO_PATH}/clientv3/integration"
 }
 
 function integration_e2e_pass {

vendor/github.com/coreos/etcd/version/version.go

@@ -26,7 +26,7 @@ import (
 var (
 	// MinClusterVersion is the min cluster version this etcd binary is compatible with.
 	MinClusterVersion = "3.0.0"
-	Version           = "3.2.11"
+	Version           = "3.2.13"
 	APIVersion        = "unknown"
 
 	// Git SHA Value will be set during build