Binder cache for Bluetooth getBondState()

Bug: 140788621

Test: A special build that puts the PropertyInvalidatedCache in verification
mode was loaded on the device.  Then one iteration of MPTS was executed.  No
cache inconsistencies were found and no SELinux violations (associated with
the binder cache) were found.  The number of cache misses was approximately
10% of the total binder calls.  Then the phone was cycled through bluetooth
pairing and unpairing events.

Change-Id: Ia494f0ad58b889130052e5beb3bec6d1011508ef