Add API-v3 merged core API into core API list

This completes core API list, so if one of those could not be loaded
an exception will be raised.

The changes on the tests were necessary to avoid whitelist or blacklist all the
core API or get an exception cause one of them wasn't loadi
Also to fix a bug in the tests that override the black or white lists options
and it wasn't in list format causing, for instance, that ips API match with
os-fixed-ips.

Related to bp nova-v3-api

Change-Id: I6e0c6eaa38863495bcabf2e6ce082589becdfe82
Merge "Add API-v3 merged core API into core API list"