Fixes the metadata forwarding to work by default.
Fixes the metadata forwarding to work by default.

This branch also moves get_my_ip into flags.py from utils.py and sets up a flag called my_ip.  Any flag that was using get_my_ip can just use '$my_ip' as the default value.  This allows a user to change all ips by changing one flag.
citrix-openstack-build/oslo.versionedobjects,openstack/oslo.versionedobjects