Handle PermissionDenied exception for lb resources

This patch catches cfgm_common.PermissionDenied exception
and returns BadRequest if the lb resource creation fails
because of quota limit.

This patch also adds other missing lbaas resources for quota
check in the quota driver.

Change-Id: I4436c7ca1ce899c8892c4fa26dd1f957247631ea
Partial-bug: #1418402

neutron_plugin_contrail/plugins/opencontrail/loadbalancer/loadbalancer_db.py

@@ -7,6 +7,8 @@
 import uuid
 
 from oslo.config import cfg
+from cfgm_common import exceptions as vnc_exc
+from neutron.common import exceptions as n_exc
 from neutron.extensions import loadbalancer
 from neutron.extensions.loadbalancer import LoadBalancerPluginBase
 from vnc_api.vnc_api import VncApi
@@ -88,7 +90,10 @@ def get_vip(self, context, id, fields=None):
         return self._vip_manager.get_resource(context, id, fields)
 
     def create_vip(self, context, vip):
-        return self._vip_manager.create(context, vip)
+        try:
+            return self._vip_manager.create(context, vip)
+        except vnc_exc.PermissionDenied as ex:
+            raise n_exc.BadRequest(resource='vip', msg=str(ex))
 
     def update_vip(self, context, id, vip):
         return self._vip_manager.update(context, id, vip)
@@ -103,7 +108,10 @@ def get_pool(self, context, id, fields=None):
         return self._pool_manager.get_resource(context, id, fields)
 
     def create_pool(self, context, pool):
-        return self._pool_manager.create(context, pool)
+        try:
+            return self._pool_manager.create(context, pool)
+        except vnc_exc.PermissionDenied as ex:
+            raise n_exc.BadRequest(resource='pool', msg=str(ex))
 
     def update_pool(self, context, id, pool):
         return self._pool_manager.update(context, id, pool)
@@ -213,7 +221,10 @@ def get_member(self, context, id, fields=None):
         return self._member_manager.get_resource(context, id, fields)
 
     def create_member(self, context, member):
-        return self._member_manager.create(context, member)
+        try:
+            return self._member_manager.create(context, member)
+        except vnc_exc.PermissionDenied as ex:
+            raise n_exc.BadRequest(resource='member', msg=str(ex))
 
     def update_member(self, context, id, member):
         return self._member_manager.update(context, id, member)
@@ -228,7 +239,10 @@ def get_health_monitor(self, context, id, fields=None):
         return self._monitor_manager.get_resource(context, id, fields)
 
     def create_health_monitor(self, context, health_monitor):
-        return self._monitor_manager.create(context, health_monitor)
+        try:
+            return self._monitor_manager.create(context, health_monitor)
+        except vnc_exc.PermissionDenied as ex:
+            raise n_exc.BadRequest(resource='health_monitor', msg=str(ex))
 
     def update_health_monitor(self, context, id, health_monitor):
         return self._monitor_manager.update(context, id, health_monitor)

neutron_plugin_contrail/plugins/opencontrail/quota/driver.py

@@ -39,6 +39,8 @@ class QuotaDriver(object):
             'port': 'virtual_machine_interface',
             'pool': 'loadbalancer_pool',
             'vip': 'virtual_ip',
+            'member': 'loadbalancer_member',
+            'health_monitor': 'loadbalancer_healthmonitor'
             };
 
     @classmethod