DO NOT MERGE ANYWHERE: Disable the use of GATT cache by default.

When a set of GATT services of a bonded device is cached locally,
an application needs to call BluetoothGatt.refresh() to clear it out
and to trigger a new service discovery.  By disabling local caching,
a service discovery is performed on every connection and that prevents
an application from getting staled GATT services.

bug: 68954828
Change-Id: I2c07404c3d56a5c8a0ffc86bc65d36480f3c46f2