Mark airship/tempest-plugin inactive

THis plugin is broken and it use retired plugin 'patrol'. The last change
done in this plugin was 7 years ago.
- https://opendev.org/airship/tempest-plugin

This unblock and re-enable the tempest-tox-plugin-sanity-check job

Change-Id: I3e7e1459b154cc8ffc1a4a9914b43cca5fefb36b
Signed-off-by: Sean Mooney <work@seanmooney.info>
diff --git a/tools/generate-tempest-plugins-list.py b/tools/generate-tempest-plugins-list.py
index 2e8ced5..0690d57 100644
--- a/tools/generate-tempest-plugins-list.py
+++ b/tools/generate-tempest-plugins-list.py
@@ -79,6 +79,10 @@
     # No changes are merging in this
     # https://review.opendev.org/q/project:x%252Fnetworking-fortinet
     'x/networking-fortinet'
+    # It is broken and it use retired plugin 'patrol'. Last change done
+    # in this plugin was 7 years ago.
+    # https://opendev.org/airship/tempest-plugin
+    'airship/tempest-plugin'
 ]
 
 url = 'https://review.opendev.org/projects/'