Unsupress duplicates tests (1/2)

Add some more common.collect classes to proguard
exclusion flags file.

Test: Ran user build GoogleContacts tests on
      Nexus 5 LMY49R, MOB30H, and Nexus 6P NDR90M

Bug: 30944518
Bug: 28731060
Bug: 30976481

Change-Id: Id8f0ed9c9427bb47e2c11d3adc071c1bc2c48084