ctest: Add module path to sys path
ctest: Add module path to sys path

Updated the pythonloader test module to always append the module's path
to the system path.

Signed-off-by: Noel Eck <1e36ab6ededef40f3f16bdbc1b09eee72c5d08cf@intel.com>

g-vidal/upm,pylbert/upm,intel-iot-devkit/upm,intel-iot-devkit/upm,stefan-andritoiu/upm,pylbert/upm,stefan-andritoiu/upm,stefan-andritoiu/upm,Propanu/upm,stefan-andritoiu/upm,intel-iot-devkit/upm,g-vidal/upm,intel-iot-devkit/upm,g-vidal/upm,Propanu/upm,Propanu/upm,Propanu/upm,pylbert/upm,Propanu/upm,stefan-andritoiu/upm,g-vidal/upm,g-vidal/upm,pylbert/upm,g-vidal/upm,pylbert/upm,intel-iot-devkit/upm,pylbert/upm,stefan-andritoiu/upm,Propanu/upm,intel-iot-devkit/upm