Zen: Calendar auto-rule tracks primary calendar for corp profile.

 - Track the calendar provider for the managed profile user if found.
 - Add userId to the shared data structure to disambig calendar ids.
 - Delay rule update a bit to guard against chatty updates.
 - Fix logging in calendar rule.

Bug: 21155107
Change-Id: Id2303fcc39b1fa7417b1844b7869d773ef92434c