Update k8s dependencies to v1.22.0-rc.0

vendor/google.golang.org/grpc/regenerate.sh

@@ -40,29 +40,14 @@ echo "go install cmd/protoc-gen-go-grpc"
 echo "git clone https://github.com/grpc/grpc-proto"
 git clone --quiet https://github.com/grpc/grpc-proto ${WORKDIR}/grpc-proto
 
+echo "git clone https://github.com/protocolbuffers/protobuf"
+git clone --quiet https://github.com/protocolbuffers/protobuf ${WORKDIR}/protobuf
+
 # Pull in code.proto as a proto dependency
 mkdir -p ${WORKDIR}/googleapis/google/rpc
 echo "curl https://raw.githubusercontent.com/googleapis/googleapis/master/google/rpc/code.proto"
 curl --silent https://raw.githubusercontent.com/googleapis/googleapis/master/google/rpc/code.proto > ${WORKDIR}/googleapis/google/rpc/code.proto
 
-# Pull in the following repos to build the MeshCA config proto.
-ENVOY_API_REPOS=(
-  "https://github.com/envoyproxy/data-plane-api"
-  "https://github.com/cncf/udpa"
-  "https://github.com/envoyproxy/protoc-gen-validate"
-)
-for repo in ${ENVOY_API_REPOS[@]}; do
-  dirname=$(basename ${repo})
-  mkdir -p ${WORKDIR}/${dirname}
-  echo "git clone ${repo}"
-  git clone --quiet ${repo} ${WORKDIR}/${dirname}
-done
-
-# Pull in the MeshCA service proto.
-mkdir -p ${WORKDIR}/istio/istio/google/security/meshca/v1
-echo "curl https://raw.githubusercontent.com/istio/istio/master/security/proto/providers/google/meshca.proto"
-curl --silent https://raw.githubusercontent.com/istio/istio/master/security/proto/providers/google/meshca.proto > ${WORKDIR}/istio/istio/google/security/meshca/v1/meshca.proto
-
 mkdir -p ${WORKDIR}/out
 
 # Generates sources without the embed requirement
@@ -84,15 +69,14 @@ SOURCES=(
   ${WORKDIR}/grpc-proto/grpc/lookup/v1/rls.proto
   ${WORKDIR}/grpc-proto/grpc/lookup/v1/rls_config.proto
   ${WORKDIR}/grpc-proto/grpc/service_config/service_config.proto
-  ${WORKDIR}/grpc-proto/grpc/tls/provider/meshca/experimental/config.proto
-  ${WORKDIR}/istio/istio/google/security/meshca/v1/meshca.proto
+  ${WORKDIR}/grpc-proto/grpc/testing/*.proto
+  ${WORKDIR}/grpc-proto/grpc/core/*.proto
 )
 
 # These options of the form 'Mfoo.proto=bar' instruct the codegen to use an
 # import path of 'bar' in the generated code when 'foo.proto' is imported in
 # one of the sources.
-OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,\
-Menvoy/config/core/v3/config_source.proto=github.com/envoyproxy/go-control-plane/envoy/config/core/v3
+OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core
 
 for src in ${SOURCES[@]}; do
   echo "protoc ${src}"
@@ -100,9 +84,7 @@ for src in ${SOURCES[@]}; do
     -I"." \
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
-    -I${WORKDIR}/data-plane-api \
-    -I${WORKDIR}/udpa \
-    -I${WORKDIR}/protoc-gen-validate \
+    -I${WORKDIR}/protobuf/src \
     -I${WORKDIR}/istio \
     ${src}
 done
@@ -113,9 +95,7 @@ for src in ${LEGACY_SOURCES[@]}; do
     -I"." \
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
-    -I${WORKDIR}/data-plane-api \
-    -I${WORKDIR}/udpa \
-    -I${WORKDIR}/protoc-gen-validate \
+    -I${WORKDIR}/protobuf/src \
     -I${WORKDIR}/istio \
     ${src}
 done
@@ -132,8 +112,8 @@ rm ${WORKDIR}/out/google.golang.org/grpc/reflection/grpc_testingv3/*.pb.go
 # grpc/service_config/service_config.proto does not have a go_package option.
 mv ${WORKDIR}/out/grpc/service_config/service_config.pb.go internal/proto/grpc_service_config
 
-# istio/google/security/meshca/v1/meshca.proto does not have a go_package option.
-mkdir -p ${WORKDIR}/out/google.golang.org/grpc/credentials/tls/certprovider/meshca/internal/v1/
-mv ${WORKDIR}/out/istio/google/security/meshca/v1/* ${WORKDIR}/out/google.golang.org/grpc/credentials/tls/certprovider/meshca/internal/v1/
+# grpc/testing does not have a go_package option.
+mv ${WORKDIR}/out/grpc/testing/*.pb.go interop/grpc_testing/
+mv ${WORKDIR}/out/grpc/core/*.pb.go interop/grpc_testing/core/
 
 cp -R ${WORKDIR}/out/google.golang.org/grpc/* .