
Automatic merge from submit-queue (batch tested with PRs 40932, 41896, 41815, 41309, 41628) Add custom CA file to openstack cloud provider config **What this PR does / why we need it**: Adds ability to specify custom CA bundle file to verify OpenStack endpoint against. Useful in tests and PoC deployments. Similar to what https://github.com/kubernetes/kubernetes/pull/35488 did for authentication. **Which issue this PR fixes**: None **Special notes for your reviewer**: Based on https://github.com/kubernetes/kubernetes/pull/35488 which added support for custom CA file for authentication. **Release note**: