webui-ci: fix reset password check

After login, CI checks if password needs a reset by checking if
reset password fields are displayed. This check failed since
login facet was removed from DOM after successful auth. Weakening
the selector fixes it.

Reviewed-By: Petr Viktorin <pviktori@redhat.com>
test_integration.tasks: Wait for DNS after adding A records

New records are not visible in DNS immediately after they are added.
When a replica is installed too soon, it is sometimes not found
in DNS and the master→replica connection check fails.

Add the wait_for_dns option to prevent this problem.