The purpose for having defaults.yml on the command line was originally
for variable inheritance. Over the past month we have slowly changed
how things are inherited (like ports) allowing us to place these
'defaults' into the group_vars/all.yml location as they should be
values that go unchanged (but can be overridden).

Change-Id: I2becec66bf431bfc9d88fc825b5380c1e173ca70
Partially-Implements: blueprint update-configs