Support for dynamically adding of DNS records

[balajiv113]

Fixes #214

Note: I haven't provided delete functionality as the addition is always going to be the first searched DNS zone.
If you still feel like we need one i can provide that support as well.

[balajiv113]

Failed CI is due to GitHub actions downtime i think.
Should get successful with a retry once

[cfergeau]

Failed CI is due to GitHub actions downtime i think. Should get successful with a retry once

Yes, after a few tries it's green :)

[cfergeau]

As a heads-up, this conflicts with #223, not sure which one will get merged first.

[balajiv113]

Sure 👍 Can take care of resolving conflicts if that get's merged first

[cfergeau]

Looks fine to me, though the zones data structure needs to be protected against concurrent accesses.

[cfergeau]

Looks good to me, though there's now a conflict. I can fix the conflict myself if you don't have time for it now.

[balajiv113]

@cfergeau - Resolving conflicts now.

[balajiv113]

@cfergeau
Resolved conflicts.

[openshift-ci]

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