17.8 backport: Allow loopback and link-local addresses, resolve DNS names
Relates to Rework KAS private API address discovery (#510 - closed).
This is a backport of Allow loopback and link-local addresses, resolv... (!2181 - merged) into %17.8. Also pulls in Support multiple CIDRs in OWN_PRIVATE_API_CIDR (!2165 - merged) to avoid dealing with conflicts.
- Support name resolution when detecting own private API URL
Changelog: fixed (cherry picked from commit 934f0a87)
- Allow loopback and link-local addresses, log a warning
Changelog: fixed (cherry picked from commit aa51e979)
- Support multiple CIDRs in OWN_PRIVATE_API_CIDR
(cherry picked from commit b728cc01)