Change submodule path

Author: WeiranFang

.gitmodules

@@ -1,3 +1,4 @@
-[submodule "grpc-gcp/test/googleapis"]
-	path = grpc-gcp/test/googleapis
+[submodule "third_party/googleapis"]
+	path = third_party/googleapis
 	url = https://github.com/googleapis/googleapis.git
+	branch = master

grpc-gcp/test/codegen.sh

@@ -5,9 +5,9 @@ rm -rf google
 
 PROTOC=../node_modules/grpc-tools/bin/protoc.js
 
-for p in $(find ./googleapis/google -type f -name *.proto); do
+for p in $(find ../../third_party/googleapis/google -type f -name *.proto); do
   $PROTOC \
-    --proto_path=./googleapis \
+    --proto_path=../../third_party/googleapis \
     --js_out=import_style=commonjs,binary:./ \
     --grpc_out=./ \
     "$p"