build: use trampoline_v2 for python samples and allow custom dockerfile

Source-Link: googleapis/synthtool@a7ed11e Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:6e7328583be8edd3ba8f35311c76a1ecbc823010279ccb6ab46b7a76e25eafcc

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -1,17 +1,3 @@
-# Copyright 2021 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.
-
 docker:
  image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
- digest: sha256:82b12321da4446a73cb11bcb6812fbec8c105abda3946d46e6394e5fbfb64c0f
+ digest: sha256:6e7328583be8edd3ba8f35311c76a1ecbc823010279ccb6ab46b7a76e25eafcc

.kokoro/samples/lint/common.cfg

@@ -31,4 +31,4 @@ gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
 
 # Use the trampoline script to run in docker.
-build_file: "python-cloud-common/.kokoro/trampoline.sh"
+build_file: "python-cloud-common/.kokoro/trampoline_v2.sh"

.kokoro/samples/python3.6/common.cfg

@@ -37,4 +37,4 @@ gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
 
 # Use the trampoline script to run in docker.
-build_file: "python-cloud-common/.kokoro/trampoline.sh"
+build_file: "python-cloud-common/.kokoro/trampoline_v2.sh"

.kokoro/samples/python3.6/periodic.cfg

@@ -3,4 +3,4 @@
 env_vars: {
  key: "INSTALL_LIBRARY_FROM_SOURCE"
  value: "False"
-}
+}

.kokoro/samples/python3.7/common.cfg

@@ -37,4 +37,4 @@ gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
 
 # Use the trampoline script to run in docker.
-build_file: "python-cloud-common/.kokoro/trampoline.sh"
+build_file: "python-cloud-common/.kokoro/trampoline_v2.sh"

.kokoro/samples/python3.7/periodic.cfg

@@ -3,4 +3,4 @@
 env_vars: {
  key: "INSTALL_LIBRARY_FROM_SOURCE"
  value: "False"
-}
+}

.kokoro/samples/python3.8/common.cfg

@@ -37,4 +37,4 @@ gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
 
 # Use the trampoline script to run in docker.
-build_file: "python-cloud-common/.kokoro/trampoline.sh"
+build_file: "python-cloud-common/.kokoro/trampoline_v2.sh"

.kokoro/samples/python3.8/periodic.cfg

@@ -3,4 +3,4 @@
 env_vars: {
  key: "INSTALL_LIBRARY_FROM_SOURCE"
  value: "False"
-}
+}

.kokoro/samples/python3.9/common.cfg

@@ -37,4 +37,4 @@ gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
 
 # Use the trampoline script to run in docker.
-build_file: "python-cloud-common/.kokoro/trampoline.sh"
+build_file: "python-cloud-common/.kokoro/trampoline_v2.sh"

.kokoro/samples/python3.9/periodic.cfg

@@ -3,4 +3,4 @@
 env_vars: {
  key: "INSTALL_LIBRARY_FROM_SOURCE"
  value: "False"
-}
+}