test execution command string substitution for $program should reference absolute path (or relative to calling cwd) based on python docs https://docs.python.org/2/library/subprocess.html#popen-constructor
test execution command string substitution for $program should reference absolute path (or relative to calling cwd) based on python docs https://docs.python.org/2/library/subprocess.html#popen-constructor

autopulated/yotta,ARMmbed/yotta,autopulated/yotta,ARMmbed/yotta