* Enhance the BLE test runner to build additional peripheral builds
when detecting peripheral*.overlay files in the test.
* Add basic and multiple-peripheral tests to exercise the testing
support
* Add test for triggering local behaviors on split peripherals.
fix(ble): Fix building split code w/o settings
* Properly exclude storing peripheral addresses to settings when
settings support isn't turned on.
* Add security related tests to verify behavior when trying to read
a GATT characteristic from our peripheral with and without client
auto security request/retry.
Pete Johanson