Fix: nc call on UC16.

[gntzio]

Description

UC16 has an ancient netcat-openbsd version:
OpenBSD netcat (Debian patchlevel 1.105-7ubuntu1)
This version does not support -N flag:

nc -N
nc: invalid option -- 'N'
This is nc from the netcat-openbsd package. An alternative nc is available
in the netcat-traditional package.

This PR introduces compliance with older versions of netcat-openbsd.

How to test

To reproduce run nc -N on the UC16 device.

Documentation

https://manpages.debian.org/bookworm/netcat-openbsd/nc.1.en.html

-q seconds
after EOF on stdin, wait the specified number of seconds and then quit. If seconds is negative, wait forever (default). Specifying a non-negative seconds implies -N.

[Copilot]

Pull request overview

This PR fixes compatibility with older versions of netcat-openbsd on UC16 devices by replacing the -N flag (not supported in version 1.105-7ubuntu1) with -q 1, which has equivalent behavior and is supported in both old and new versions.

Changes:

• Updated the nc command in SnapdAPIClient.get() to use -q 1 instead of -N
• Updated the corresponding test assertion to match the new command

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
cert-tools/toolbox/src/toolbox/interfaces/snapd.py	Changed netcat flags from -N to -q 1 for UC16 compatibility
cert-tools/toolbox/tests/interfaces/test_snapd.py	Updated test assertion to verify the new netcat command structure

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[fernando79513]

Thanks a lot for the fix!
LGTM