Remove Mattermost team with GitLab group

When destroying a group, now an API call is made to the Mattermost
server to request the deletion of the project. Actual team deletion on
the Mattermost side happens async, so the runtime shouldn't increase by
more than a second.

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/mattermost/team.rb b/lib/mattermost/team.rb
index 2cdbbdece16..b2511f3af1d 100644
--- a/lib/mattermost/team.rb
+++ b/lib/mattermost/team.rb
@@ -14,5 +14,12 @@ module Mattermost
         type: type
       }.to_json)
     end
+
+    # The deletion is done async, so the response is fast.
+    # On the mattermost side, this triggers an soft deletion first, after which
+    # the actuall data is removed
+    def destroy(team_id:)
+      session_delete("/api/v4/teams/#{team_id}?permanent=true")
+    end
   end
 end