Add e2e test for ingesting logs to Stackdriver against new k8s_container and k8s_node resources.
Add e2e test for ingesting logs to Stackdriver against new k8s_container and k8s_node resources.

GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid