NSX plugin configuration in Web UI

Change-Id: I984105e6b871016ba2b8a2dbb857e76823f019ab
Implements: blueprint neutron-nsx-plugin-integration
Fuel client remove deprecation warning

 * Modified FuelClientException class
 * Added Doc-strings to all Fuel-Client exceptions

 Works. Checked on python 2.6.9 and 2.7.5
 Closes-bug: #1320225

Change-Id: I271b8d407ee9c6110d4d86dbb1c06b1a7cf4e761
Add /etc/fuel to diagnostic snapshot

We store some configs in /etc/fuel directory so it would be nice
to have this dir in our diagnostic snapshot.

Change-Id: I86168a8ab2e6859b239712175ff3bf6ab7e44b95
fix typo
Merge "Add /etc/fuel to diagnostic snapshot"
Merge branch 'nsx'