Creates config options for policy.json paths

Removes unsused "path" parameter from rbac_policy_parser.py.
Allows for configuration of policy.json paths by service for
Cinder, Glance, Keystone, Neutron, and Nova.

Change-Id: Ifb386511fd533d587d99de6585ddb78bc17cbc94
diff --git a/patrole_tempest_plugin/config.py b/patrole_tempest_plugin/config.py
index dfb6cef..cb00269 100644
--- a/patrole_tempest_plugin/config.py
+++ b/patrole_tempest_plugin/config.py
@@ -30,5 +30,20 @@
                 default=False,
                 help="If true, throws RbacParsingException for"
                      " policies which don't exist. If false, "
-                     "throws skipException.")
+                     "throws skipException."),
+    cfg.StrOpt('cinder_policy_file',
+               default='/etc/cinder/policy.json',
+               help="Location of the neutron policy file."),
+    cfg.StrOpt('glance_policy_file',
+               default='/etc/glance/policy.json',
+               help="Location of the glance policy file."),
+    cfg.StrOpt('keystone_policy_file',
+               default='/etc/keystone/policy.json',
+               help="Location of the keystone policy file."),
+    cfg.StrOpt('neutron_policy_file',
+               default='/etc/neutron/policy.json',
+               help="Location of the neutron policy file."),
+    cfg.StrOpt('nova_policy_file',
+               default='/etc/nova/policy.json',
+               help="Location of the nova policy file.")
 ]