check response_code when retrieving environment from sample app (#431)
check response_code when retrieving environment from sample app (#431)


GoogleCloudPlatform/runtimes-common,dlorenc/runtimes-common,priyawadhwa/runtimes-common,dlorenc/runtimes-common,nkubala/runtimes-common,GoogleCloudPlatform/runtimes-common,priyawadhwa/runtimes-common,priyawadhwa/runtimes-common,dlorenc/runtimes-common,sharifelgamal/runtimes-common,priyawadhwa/runtimes-common,sharifelgamal/runtimes-common,nkubala/runtimes-common,sharifelgamal/runtimes-common,sharifelgamal/runtimes-common,nkubala/runtimes-common,GoogleCloudPlatform/runtimes-common,nkubala/runtimes-common,sharifelgamal/runtimes-common,sharifelgamal/runtimes-common,priyawadhwa/runtimes-common,nkubala/runtimes-common,priyawadhwa/runtimes-common,priyawadhwa/runtimes-common,sharifelgamal/runtimes-common