What this PR does / why we need it:
Customer reported that alias records are not supported in AWS GovCloud Route53 according to AWS technical support.
Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Release note:
As AWS "us-gov" zones do not support alias target records, they are excluded from the list of canonical hosted zones used to decide if `ALIAS` records are created instead of `CNAME` records.
What this PR does / why we need it: Customer reported that alias records are not supported in AWS GovCloud Route53 according to AWS technical support.
Which issue(s) this PR fixes: Fixes #
Special notes for your reviewer:
Release note: