Get project list from gerrit

There is no need to interact with github. The full project list can
be retreived from a single query to gerrit to get the full project
list.

Change-Id: I49a7c3a7ff7d070b8a166c11e66475870cdcd6ca

stackalytics/processor/config.py

@@ -37,6 +37,8 @@ OPTS = [
                help='The address of file with corrections data'),
     cfg.StrOpt('review-uri', default='gerrit://review.openstack.org',
                help='URI of review system'),
+    cfg.StrOpt('git-base-uri', default='git://git.openstack.org',
+               help='git base location'),
     cfg.StrOpt('ssh-key-filename', default='/home/user/.ssh/id_rsa',
                help='SSH key for gerrit review system access'),
     cfg.StrOpt('ssh-username', default='user',