NSX|V: Add pool transparency config flag

Allow creation of LB pools with transparent mode on. This is a global
flag which will apply to all of the pools which are created.

Change-Id: If0f9294224270957c00114dd237fc9b98c1a1cbb

vmware_nsx/common/config.py

@@ -858,6 +858,10 @@ nsxv_opts = [
     cfg.BoolOpt('init_validation',
                 default=True,
                 help=_("Set to False to skip plugin init validation")),
+    cfg.BoolOpt('loadbalancer_pool_transparency',
+                default=False,
+                help=_("Create LBaaS pools with transparent mode on. Use with "
+                       "use_routers_as_lbaas_platform enabled")),
 
 ]
 

vmware_nsx/services/lbaas/nsx_v/implementation/pool_mgr.py

@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from oslo_config import cfg
 from oslo_log import helpers as log_helpers
 from oslo_log import log as logging
 from oslo_utils import excutils
@@ -35,6 +36,9 @@ class EdgePoolManagerFromDict(base_mgr.EdgeLoadbalancerBaseManager):
     def __init__(self, vcns_driver):
         super(EdgePoolManagerFromDict, self).__init__(vcns_driver)
         self._fw_section_id = None
+        self.pool_transparency = (
+                cfg.CONF.nsxv.use_routers_as_lbaas_platform and
+                cfg.CONF.nsxv.loadbalancer_pool_transparency)
 
     def create(self, context, pool, completor):
 
@@ -44,7 +48,7 @@ class EdgePoolManagerFromDict(base_mgr.EdgeLoadbalancerBaseManager):
             'description': pool.get('description', pool.get('name')),
             'algorithm': lb_const.BALANCE_MAP.get(pool['lb_algorithm'],
                                                   'round-robin'),
-            'transparent': False
+            'transparent': self.pool_transparency
         }
 
         lb_id = pool['loadbalancer_id']