The feature xml plays two roles:
1) To allow sdk interface (constructor) to throw when system
service is unavailable. This allows for clearer platform
development debugging.
2) To allow for simpler disambiguation of what services to
instrument in a modular environment.
Change-Id: Ic980225df9c115e97f7147cf043cf92bbb225f01
TICKET: CYNGNOS-2293
Created the AndroidTestCase unit test
Added functional testing for airplane mode, which can be restored
without contaminating other tests.
Also added setZenMode testing, which currently contaminates other
tests. But we will allow for lack of a better way
FOR-156
Change-Id: I2ab5642c60f41266d9de8aab897e4852e872ad38