chore: update template to enable docs generation (#63)

* chore: update template to enable docs generation

* chore: remove unnecessary lines

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

.kokoro/docs/common.cfg

@@ -30,9 +30,8 @@ env_vars: {
 
 env_vars: {
     key: "V2_STAGING_BUCKET"
-    # Push non-cloud library docs to `docs-staging-v2-staging` instead of the
-    # Cloud RAD bucket `docs-staging-v2`
-    value: "docs-staging-v2-staging"
+    # Allow publishing docs for this library.
+    value: "docs-staging-v2"
 }
 
 # It will upload the docker image after successful builds.

owlbot.py

@@ -44,6 +44,15 @@
 
 templated_files = gcp.CommonTemplates().py_library()
 s.move(templated_files / ".kokoro")
+s.replace(
+    ".kokoro/docs/common.cfg",
+    """# Push non-cloud library docs to `docs-staging-v2-staging` instead of the
+    # Cloud RAD bucket `docs-staging-v2`
+    value: \"docs-staging-v2-staging\"""",
+    """# Allow publishing docs for this library.
+    value: \"docs-staging-v2\"""",
+)
+
 s.move(templated_files / "docs", excludes=["multiprocessing.rst"])
 s.move(templated_files / "LICENSE")
 s.move(templated_files / "CONTRIBUTING.rst")