[10.6] Prevent notes on confidential issues from being sent to chat
See merge request gitlab/gitlabhq!2366
# Conflicts:
# app/helpers/services_helper.rb
If a later spec tries to set a field that is added to any of these models by a
later migration than the GCP clusters migration, it will fail because the
model's columns are cached.
We should always refer to models in migration specs by either their class in the
migration, or the table directly, using the `table` helper.
Instead of using the factories. Since the factories might be using
columns that aren't available in the schema at version the particular
spec is running in.
Douwe Maan