feat(verifier): support --enable-pending flag in CLI

Closes #164

pact/cli/verify.py

@@ -111,8 +111,8 @@
     'log_level', '--log-level',
     help='The logging level.')
 @click.option(
-    'enable_pending', '--enable-pending',
-    default=False,
+    'enable_pending', '--enable-pending/--no-enable-pending',
+    default=None,
     help='Allow pacts which are in pending state to be verified without causing the'
          ' overall task to fail. For more information, see https://pact.io/pending',
     is_flag=True)
@@ -176,7 +176,7 @@ def main(pacts, base_url, pact_url, pact_urls, states_url, states_setup_url,
         'consumer_selectors': list(consumer_version_selector),
         'provider_tags': list(provider_version_tag),
         'provider_states_setup_url': states_setup_url,
-
+        'enable_pending': enable_pending,
     }
 
     options = dict(filter(lambda item: item[1] is not None, options.items()))

tests/cli/test_verify.py

@@ -228,7 +228,8 @@ def test_all_url_options(self, mock_isfile, mock_wrapper):
             '--log-dir=tmp/logs/pact.test.log',
             '--log-level=INFO',
             '--timeout=60',
-            '--verbose'
+            '--verbose',
+            '--enable-pending',
         ])
         self.assertEqual(result.exit_code, 0, result.output)
 
@@ -250,7 +251,9 @@ def test_all_url_options(self, mock_isfile, mock_wrapper):
                                 log_dir='tmp/logs/pact.test.log',
                                 log_level='INFO',
                                 timeout=60,
-                                verbose=True)
+                                verbose=True,
+                                enable_pending=True,
+                                )
 
     @patch("pact.verify_wrapper.VerifyWrapper.call_verify")
     def test_all_broker_options(self, mock_wrapper):