Added trigger imports into time_sleep

[nickryand]

Implemented importing triggers using an expanded syntax for the trigger map. The format of the trigger definition is as follows:

"CREATE,DESTROY,KEY=VALUE,KEY=VALUE..."

Without being able to import triggers, a time_sleep import will always cause a replacement and therefore may trigger replaces for resources that depend on the time_sleep when they are not needed.

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Relates OR Closes #0000