comm_og_service_tool.py Required Arguments

[UVTRyan]

When running "python3 comm_og_service_tool.py WM240 --port com16 GimbalCalib", I get a verbose error saying a sub-command is required, but when running CameraCalib or FlycParam, we get the same error seen in issue #346.

Possible fix: Add "required=True," to the end of lines 1641 and 1693.

Hopefully, this is the right channel to suggest this change, I just want to contribute in the small way that I can.