Release process

Validating release config - TODO (rnv) - convert to presubmit cloud build

task

After making changes to the release state the validity of the changes can be checked by running the following command from the root of the repo:

gcloud builds submit --config=presubmit.yaml

where presubmit.yaml could look like the following:

steps:
- name: 'gcr.io/google.com/cloudsdktool/cloud-sdk:latest'
  entrypoint: 'bash'
  args: ['-c',
  'pip3 install -r release/requirements.txt && python3 release/release.py --verify'
  ]