config: Exclude Launcher3*/Calendar packages from enforcement

* These are built by AOSP common includes, and we can track most of
  these apps, but Etar and Trebuchet are only partial rebrands of their
  source-application, which means there are conflicts when tracking
  them, so exclude them.

Change-Id: I1fb893e6f5df693ddb551fa22adde9d05a60d1d8