ms_driver: Allow to specify env and binary name/path

For the proper trial/suite integration we can't assume that the
virtphy/mobile are in the PATH and that they can be executed
directly (e.g. need a LD_LIBRARY_PATH to be applied).

Introduce BinaryOptions to pass the name/path of the two executables
and the env to use. Default this to virtphy/mobile and an empty
environment.

Change-Id: I79a57e53bc20613ac061453c24fd29a6d05e1721
4 files changed