Translate tenant_id to project_id in Octavia loadbalancer resource

Story: 2004650
Task: 28603
Change-Id: Iaead412604f53d7196949fd475f266711e11c8b5

heat/engine/resources/openstack/octavia/loadbalancer.py

@@ -126,6 +126,8 @@ class LoadBalancer(octavia_base.OctaviaBase):
         if self.NAME not in props:
             props[self.NAME] = self.physical_resource_name()
         props['vip_subnet_id'] = props.pop(self.VIP_SUBNET)
+        if 'tenant_id' in props:
+            props['project_id'] = props.pop('tenant_id')
         return props
 
     def handle_create(self):

heat/tests/openstack/octavia/test_loadbalancer.py

@@ -56,7 +56,7 @@ class LoadBalancerTest(common.HeatTestCase):
                 'vip_address': '10.0.0.4',
                 'vip_subnet_id': '123',
                 'provider': 'octavia',
-                'tenant_id': '1234',
+                'project_id': '1234',
                 'admin_state_up': True,
             }
         }