More logging in _update_internal_gateway_port_ip

Change-Id: I4fdb2b97d04db78cbc40ca2e8e66ab780ccff638
Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
pep8 errors

Change-Id: I3909127d831581dbd2724d176d8532952dad444d
Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
Merge pull request #15 from dhellmann/even-more-debug-logging

More logging in _update_internal_gateway_port_ip