Add tls_enabled param for Octavia Pools

tls_enabled parameter allows the user to enable TLS communication
between a load balancer and its members.

Story 2008368
Task 41278

Change-Id: If0a2e0c98403baa5fcb2352fc99239106d27ffc6

openstack/load_balancer/v2/pool.py

@@ -29,7 +29,8 @@ class Pool(resource.Resource, resource.TagMixin):
         'health_monitor_id', 'lb_algorithm', 'listener_id', 'loadbalancer_id',
         'description', 'name', 'project_id', 'protocol',
         'created_at', 'updated_at', 'provisioning_status', 'operating_status',
-        'tls_ciphers', 'tls_versions', is_admin_state_up='admin_state_up',
+        'tls_enabled', 'tls_ciphers', 'tls_versions',
+        is_admin_state_up='admin_state_up',
         **resource.TagMixin._tag_query_parameters
     )
 
@@ -72,3 +73,5 @@ class Pool(resource.Resource, resource.TagMixin):
     tls_versions = resource.Body('tls_versions', type=list)
     #: Timestamp when the pool was updated
     updated_at = resource.Body('updated_at')
+    #: Use TLS for connections to backend member servers *Type: bool*
+    tls_enabled = resource.Body('tls_enabled', type=bool)

openstack/tests/unit/load_balancer/test_pool.py

@@ -35,6 +35,7 @@ EXAMPLE = {
     'health_monitor': 'healthmonitor',
     'health_monitor_id': uuid.uuid4(),
     'members': [{'id': uuid.uuid4()}],
+    'tls_enabled': True,
     'tls_ciphers': 'ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256',
     'tls_versions': ['TLSv1.1', 'TLSv1.2'],
 }
@@ -83,6 +84,8 @@ class TestPool(base.TestCase):
         self.assertEqual(EXAMPLE['health_monitor_id'],
                          test_pool.health_monitor_id)
         self.assertEqual(EXAMPLE['members'], test_pool.members)
+        self.assertEqual(EXAMPLE['tls_enabled'],
+                         test_pool.tls_enabled)
         self.assertEqual(EXAMPLE['tls_ciphers'],
                          test_pool.tls_ciphers)
         self.assertEqual(EXAMPLE['tls_versions'],
@@ -109,6 +112,7 @@ class TestPool(base.TestCase):
              'listener_id': 'listener_id',
              'loadbalancer_id': 'loadbalancer_id',
              'protocol': 'protocol',
+             'tls_enabled': 'tls_enabled',
              'tls_ciphers': 'tls_ciphers',
              'tls_versions': 'tls_versions',
              },

releasenotes/notes/add-tls_enabled-parameter-for-octavia-pools-f0a23436d826b313.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``tls_enabled`` parameter for Octavia pools, it can be used to enable
+    TLS communications between a load balancer and its member servers.