Tag request to go live tickets automatically

At the moment we manually tag tickets as they come in so we can analyse
how many of each type we’re getting.

Further, we manually tag all the request to go live tickets once a month
to analyse how many are complete/incomplete.

All this tagging is useful, but quite time consuming. Notify already
knows this information and – using the Zendesk API – we can tag them
automatically.

I’ve checked with Holly and this is the taxonomy we want to use.

tests/app/main/views/test_service_settings.py

@@ -758,7 +758,14 @@ def test_should_redirect_after_request_to_go_live(
         message=ANY,
         ticket_type=ZendeskClient.TYPE_QUESTION,
         user_name=active_user_with_permissions.name,
-        user_email=active_user_with_permissions.email_address
+        user_email=active_user_with_permissions.email_address,
+        tags=[
+            'notify_request_to_go_live',
+            'notify_request_to_go_live_incomplete',
+            'notify_request_to_go_live_incomplete_checklist',
+            'notify_request_to_go_live_incomplete_mou',
+            'notify_request_to_go_live_incomplete_team_member',
+        ],
     )
     assert mock_post.call_args[1]['message'] == (
         'Service: service one\n'
@@ -794,7 +801,9 @@ def test_should_redirect_after_request_to_go_live(
         'has_email_reply_to_address,'
         'shouldnt_use_govuk_as_sms_sender,'
         'sms_sender_is_govuk,'
-        'expected,'
+        'expected_readyness,'
+        'agreement_signed,'
+        'expected_tags,'
     ),
     (
         (  # Just sending email
@@ -806,6 +815,10 @@ def test_should_redirect_after_request_to_go_live(
             True,
             True,
             'Yes',
+            True,
+            [
+                'notify_request_to_go_live',
+            ],
         ),
         (  # Needs to set reply to address
             True,
@@ -816,6 +829,13 @@ def test_should_redirect_after_request_to_go_live(
             True,
             True,
             'No',
+            True,
+            [
+                'notify_request_to_go_live',
+                'notify_request_to_go_live_incomplete',
+                'notify_request_to_go_live_incomplete_checklist',
+                'notify_request_to_go_live_incomplete_email_reply_to',
+            ],
         ),
         (  # Just sending SMS
             True,
@@ -826,6 +846,10 @@ def test_should_redirect_after_request_to_go_live(
             True,
             False,
             'Yes',
+            True,
+            [
+                'notify_request_to_go_live',
+            ],
         ),
         (  # Needs to change SMS sender
             True,
@@ -836,6 +860,13 @@ def test_should_redirect_after_request_to_go_live(
             True,
             True,
             'No',
+            True,
+            [
+                'notify_request_to_go_live',
+                'notify_request_to_go_live_incomplete',
+                'notify_request_to_go_live_incomplete_checklist',
+                'notify_request_to_go_live_incomplete_sms_sender',
+            ],
         ),
         (  # Needs team members
             False,
@@ -846,6 +877,13 @@ def test_should_redirect_after_request_to_go_live(
             True,
             False,
             'No',
+            True,
+            [
+                'notify_request_to_go_live',
+                'notify_request_to_go_live_incomplete',
+                'notify_request_to_go_live_incomplete_checklist',
+                'notify_request_to_go_live_incomplete_team_member',
+            ],
         ),
         (  # Needs templates
             True,
@@ -856,6 +894,34 @@ def test_should_redirect_after_request_to_go_live(
             True,
             False,
             'No',
+            True,
+            [
+                'notify_request_to_go_live',
+                'notify_request_to_go_live_incomplete',
+                'notify_request_to_go_live_incomplete_checklist',
+                'notify_request_to_go_live_incomplete_template_content',
+            ],
+        ),
+        (  # Everything is wrong
+            False,
+            False,
+            True,
+            True,
+            False,
+            True,
+            True,
+            'No',
+            False,
+            [
+                'notify_request_to_go_live',
+                'notify_request_to_go_live_incomplete',
+                'notify_request_to_go_live_incomplete_checklist',
+                'notify_request_to_go_live_incomplete_mou',
+                'notify_request_to_go_live_incomplete_email_reply_to',
+                'notify_request_to_go_live_incomplete_team_member',
+                'notify_request_to_go_live_incomplete_template_content',
+                'notify_request_to_go_live_incomplete_sms_sender',
+            ],
         ),
     ),
 )
@@ -869,7 +935,9 @@ def test_ready_to_go_live(
     has_email_reply_to_address,
     shouldnt_use_govuk_as_sms_sender,
     sms_sender_is_govuk,
-    expected,
+    expected_readyness,
+    agreement_signed,
+    expected_tags,
 ):
     for prop in {
         'has_team_members',
@@ -887,7 +955,12 @@ def test_ready_to_go_live(
 
     assert app.notify_client.models.Service({
         'id': fake_uuid()
-    }).go_live_checklist_completed_as_yes_no == expected
+    }).go_live_checklist_completed_as_yes_no == expected_readyness
+
+    assert list(app.main.views.service_settings._get_request_to_go_live_tags(
+        app.notify_client.models.Service({'id': fake_uuid()}),
+        agreement_signed,
+    )) == expected_tags
 
 
 @pytest.mark.parametrize('route', [