Bugs discovered in preperation for the demo

[MrKevinWeiss]

• The warning for run inet-nm update-from-os has an extra space in it
• Running 2 tmux sessions without specifying the session name will overwrite the previous one
• inet-nm-show-location -g -u with an unassigned or non-commissioned one has an issue

$ inet-nm-show-location -g -u
Traceback (most recent call last):
  File "/home/weiss/repos/inet-nm/.venv/bin/inet-nm-show-location", line 8, in <module>
    sys.exit(main())
  File "/home/weiss/repos/inet-nm/src/inet_nm/cli_show_location.py", line 74, in main
    _main()
  File "/home/weiss/repos/inet-nm/src/inet_nm/cli_show_location.py", line 65, in _main
    names = [usb_info["name"] for usb_info in matching_locs]
  File "/home/weiss/repos/inet-nm/src/inet_nm/cli_show_location.py", line 65, in <listcomp>
    names = [usb_info["name"] for usb_info in matching_locs]
TypeError: string indices must be integers