test_gps might not initialize AGpsRilInterface, which could lead to segfault in some cases

[You-Sheng Yang]

AGpsInterface has been declared since AOSP v2.3 in https://android.googlesource.com/platform/hardware/libhardware.git/+/5f404f58df329e7676f8fd47bb9bb82f9dc047f1 . For AOSP, all valid extension should be initialized in the init stage, or unexpected errors might just happen from nowhere.

In Ubuntu platform-api, we do initialize all of them whenever available, but libhybris test utility test_gps only initialize it when '-r' is specified in command line arguments to turn on agps support. This lead to a segmentation fault on some devices when some system daemons in Android container tries to react with gps HAL when bootstrapped by test_gps.

In summary, test_gps should initialize all extensions as platform-api does.