PBAP: Implement Folder Version Counter(s)

Primary version counter should be updated on any change to
contact. Secondary version counter should not update when
there is change to fields other than F, FN, TEL, EMAIL or
ADDRESS. There is no default API available in android to determine
which field is updated as required for updating secondary
version counter. Implemented logic to increment the secondary
version counter by comparing updated contacts with old cached
contacts of the contact database.

Test: Verified that folder version counter gets incremented for
change(s) in fields of Contacts as per PBAP specification.

Bug: 33011817
Change-Id: I90a1ced3713c369bcde0edd627bbde57a9676708