Merge "BAS: connect gatt service when device is reconnected"

            mBluetoothGatt = mDevice.connectGatt(service, /*autoConnect=*/false,

                    mGattCallback, TRANSPORT_AUTO, /*opportunistic=*/true,

                    PHY_LE_1M_MASK | PHY_LE_2M_MASK, getHandler());

        } else {

            mBluetoothGatt.connect();

        }

        // opportunistic client will reconnect itself, no need to call mBluetoothGatt.connect()

        return mBluetoothGatt != null;

    }