PWX-32899_pt4: K8s DNS fix

[zoxpx]

What this PR does / why we need it:

Autopilot and Stork (which vendor in this library) should not assume that Kubernetes DNS is configured with default .svc.cluster.local domain

FIX:

• as a fix, we are modifying the hostnames to <service>.<endpoint> (and no .svc.cluster.local domain)
• instead, we will rely on the /etc/resolv.conf to provide the correct search <dns-domain> entry, so DNS resolution will still work correctly

Which issue(s) this PR fixes (optional)
PWX-32899 (part 4)

See also:

• part 1: https://github.com/libopenstorage/operator/pull/1437
• part 2: https://github.com/libopenstorage/stork/pull/1629
• part 3: https://github.com/pure-px/autopilot/pull/250

Testing Notes

Please check stork and autopilot PRs for manual tests results

Special notes for your reviewer:

TODO: This PR change will need to be vendored into stork and autopilot projects

[github-actions[bot]]

This PR is stale because it has been in review for 3 days with no activity.

[github-actions[bot]]

This PR is stale because it has been in review for 3 days with no activity.

[zoxpx]

Thanks for the review Aditya -- merging the PR