adding cloud to prod test for go.

tools/gce_setup/grpc_docker.sh

@@ -757,6 +757,20 @@ grpc_interop_gen_go_cmd() {
   echo $the_cmd
 }
 
+# constructs the full dockerized Go interop test cmd.
+#
+# call-seq:
+#   flags= .... # generic flags to include the command
+#   cmd=$($grpc_gen_test_cmd $flags)
+grpc_cloud_prod_gen_go_cmd() {
+  local cmd_prefix="sudo docker run grpc/go /bin/bash -c"
+  local test_script="cd /go/src/github.com/google/grpc-go/rpc/interop/client"
+  local test_script+=" && go run client.go --use_tls=true"
+  local gfe_flags="  --tls_ca_file=\"\" --tls_server_name=\"\" --server_port=443 --server_host=grpc-test.sandbox.google.com"
+  local the_cmd="$cmd_prefix '$test_script $gfe_flags $@'"
+  echo $the_cmd
+}
+
 # constructs the full dockerized java interop test cmd.
 #
 # call-seq: