Changed ecl-upload-collector-fw so that ecl-init-shaper will start automatically after ecl-b2link-recover

Added cpr13001 b2link recovery, changed so that firmware versions can be defined as global variables, added better error handling.

Added --keep-positional-args flag to parse_args.sh in order to not automatically absorb first argument as the mask

Added commands to set masking and command to wait for ethernet connection (this one should have been added sooner, forgot about it

2. Now first argument is treated as mask if no mask were specified by default.