Draft: Resolve "Add restart wait timeout to redis restarts"

What does this MR do?

This adds a 15min timeout to allow large Redis instances to shutdown properly and avoid the ShellCommandFailed: Expected process to exit with [0], but received '1' and timeout: run: /opt/gitlab/service/redis: (pid …) …s, normally down, got TERM errors.

Related issues

Resolves #4498 (closed)

Checklist

See Definition of done.

For anything in this list which will not be completed, please provide a reason in the MR discussion

Required

• Merge Request Title, and Description are up to date, accurate, and descriptive
• MR targeting the appropriate branch
• MR has a green pipeline on GitLab.com
• Pipeline is green on dev.gitlab.org if the change is touching anything besides documentation or internal cookbooks
  • pipelines/179552
• trigger-package has a green pipeline running against latest commit
  • jobs/900251229 & /900251227

Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes
• Documentation created/updated
• Tests added
• Integration tests added to GitLab QA
• Equivalent MR/issue for the GitLab Chart opened

Closes #4498 (closed)