Add support to save test details in CtsVerifier report.

- Wires the results of each test case to be stored in CtsVerifier report.
- Add support to discover test cases similarly to JUnit
- Use resources for UI strings in accelerometer tests.
- Use resources for UI strings in gyroscope tests.
- Use resources for UI strings in magnetic field tests.

Change-Id: I8e29aa459e9943ad188b3b10a651a0ea73d8110d
7 files changed