Return predictable token IDs in testing mode.
This commits builds upon the mailman.utilities.uid.UniqueIDFactory to generate predictable tokens when the testing mode is activated. This will make VCR tapes more diffable between runs.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This commits builds upon the mailman.utilities.uid.UniqueIDFactory to generate predictable tokens when the testing mode is activated. This will make VCR tapes more diffable between runs.