Add the ability to Add/Change Tags in Triggers that are created from LLD Discovery templates

All Triggers that are created from LLD discovered items are set so that Tags cannot be added or changed on the triggers.

We would like to use this functionality to link a trigger with our external ticketing system in order to track when a ticket exists or needs to be created based on the trigger that fired.  In order to do this, we need a way to link the trigger to the ticket and with all fields suppressed for editing in LLD created items/triggers, this is not possible.