Run Auto DevOps jobs when KUBECONFIG is present

What does this MR do and why?

Adds support for running Auto DevOps whenever a KUBECONFIG is present. Part of Auto DevOps for working with the CI/CD tunnel

Manual QA

• Pipeline https://gitlab.com/hfyngvason/rails-with-agent/-/pipelines/406755924
  • The deployments will fail because I didn't fully configure things and deleted my cluster before things finished, the important thing is observing that the correct jobs are triggered
• .gitlab-ci.yml for pipeline, also pasted below
• agent config

include:
  - file: 
    - lib/gitlab/ci/templates/Auto-DevOps.gitlab-ci.yml
    - lib/gitlab/ci/templates/Jobs/DAST-Default-Branch-Deploy.gitlab-ci.yml
    - lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml
    - lib/gitlab/ci/templates/Security/DAST.gitlab-ci.yml
    - lib/gitlab/ci/templates/Jobs/Browser-Performance-Testing.gitlab-ci.yml
    project: gitlab-org/gitlab
    ref: add-kubeconfig-condition-to-auto-devops

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.