CTS for setCrossProfileContactsSearchDisabled and getCrossProfileContactsSearchDisabled

1. Added the netgative expected result when trying to access managed contacts
   when policy disallows
2. Fixed b/26613449
3. Added ContactsTestSet to reuse some test cases among tests

note:
DevicePolicyManagerTest currently all fails as setUp and tearDown can't set BlankPassword
BUG=25981902

Change-Id: Iedca6b1237158bda96c320ff365da600eeb99857
3 files changed