Automates pre-release steps for release workflow

fixes: #8119
https://pulp.plan.io/issues/8119

CHANGES/8119.feature

@@ -0,0 +1,6 @@
+Automated the pre-release steps for the release workflow
+
+The release workflow for plugins now expects a release branch to exist with the correct 
+.dev version and correct pulpcore requirements. The release workflow needs to be run
+against the release branch being released. It takes one parameter: release tag (a.k.a
+version string).

README.md

@@ -191,6 +191,10 @@ The following settings are stored in `template_config.yml`.
                         This is used during commit validation to make sure the commit is attached to
                         an issue in the correct project.
 
+  release_user          The GitHub user that is associated with the RELEASE_TOKEN secret on GitHub.
+                        The username and token are used to push the Changelog and version bump commits
+                        created by the release workflow. The default is 'pulpbot'.
+
   test_bindings         Include a job that runs a script to test generated client
                         library.
 

plugin-template

@@ -51,6 +51,7 @@ DEFAULT_SETTINGS = {
     'pydocstyle': True,
     'pypi_username': None,
     'redmine_project': None,
+    'release_user': 'pulpbot',
     'test_bindings': True,
     'test_cli': False,
     'test_performance': False,
@@ -63,7 +64,13 @@ DEFAULT_SETTINGS = {
 DEPRECATED_FILES = {
     "github": [
         ".ci/scripts/cherrypick.py",
+        ".ci/scripts/docs-builder.py",
+        ".ci/scripts/publish_docs.sh",
+        ".ci/scripts/publish_client_gem.sh",
+        ".ci/scripts/publish_client_pypi.sh",
+        ".ci/scripts/publish_plugin_pypi.sh",
         ".ci/scripts/release_requirements.txt",
+        ".ci/scripts/release.py",
         ".github/workflows/fips.yml",
         ".travis",
         ".travis.yml",