add preemptible vm and volume snapshot op sample tests (#2149)

* add preemptible vm and volume snapshot op sample tests

* add config

test/sample-test/configs/default.config.yaml

@@ -14,4 +14,4 @@
 
 test_name: default_sample_test
 test_timeout: 1200
-run_pipeline: True
+run_pipeline: True

test/sample-test/configs/preemptible_tpu_gpu.config.yaml

@@ -0,0 +1,16 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+test_name: preemptible_tpu_gpu
+run_pipeline: False

test/sample-test/configs/volume_snapshot_ops.config.yaml

@@ -0,0 +1,16 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+test_name: volume_snapshot_ops
+run_pipeline: False

test/sample_test.yaml

@@ -79,6 +79,8 @@ spec:
               - imagepullsecrets
               - retry
               - artifact_location
+              - preemptible_tpu_gpu
+              - volume_snapshot_ops
     # Build and push image
     - name: build-image-by-dockerfile
       inputs: