Fix launch instance failed in trove

- remove useless *_url, which can be auto discovery
- use internalURL instead of publicURL which make it works when
  using self-signed SSL certification.
- configure network_driver to Neutron
- add network_label_regex to match all network name

Change-Id: I5654dbf391db7076c82aede5c2a4f8b7530b8381
Closes-Bug: #1734039
(cherry picked from commit 0b931c93)