labgrid/resource/remote: add missing sigrok channel_group parameter

[pslldq]

Description

Add the missing sigrok channel_group parameter to the Network variants of the sigrok resources.

Checklist

• PR has been tested

Fixes: #1536

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.2%. Comparing base (587a872) to head (5b3ccd0).
Report is 87 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #1562   +/-   ##
======================================
  Coverage    56.2%   56.2%           
======================================
  Files         170     170           
  Lines       13247   13249    +2     
======================================
+ Hits         7449    7451    +2     
  Misses       5798    5798           

Flag	Coverage Δ
3.10	56.5% <100.0%> (+<0.1%)	⬆️
3.11	56.5% <100.0%> (+<0.1%)	⬆️
3.12	56.5% <100.0%> (+<0.1%)	⬆️
3.13	56.5% <100.0%> (+<0.1%)	⬆️
3.9	56.5% <100.0%> (+<0.1%)	⬆️

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