On AIO installation we cannot assume that the public IP address
will be the first entry in "getent ahostsv4" result, because
it may be also a localhost address. To make this check positive
in AIO, we should look for the public IP in the whole output.
Change-Id: I1da7b95d7f00c7f87ff68ead46bf55fdea812599
Closes-Bug: 1564564