Convert Python OMX VTS test to Gtest

Moving the extra tests from
test/vts-testcase/hal/media/omx/V1_0/host_omxstore/VtsHalMediaOmxStoreV1_0HostTest.py
to the OMX Gtest in VtsHalMediaOmxV1_0TargetMasterTest.

This is mostly validating the RoleInfo and NodeInfo data obtained from
IOmxStore interface.

Bug: 152237762
Test: atest VtsHalMediaOmxV1_0TargetMasterTest on cf and pixel devices
Change-Id: I8174b8953ee5e484777afb21b2d170cec0159edc
Merged-In: I8174b8953ee5e484777afb21b2d170cec0159edc