TEST: os-autoinst adjustments for failing developer fullstack test

[Martchus]

This is not intended to be merged - I just want to run the CI. Hopefully my adjustments to make it pick my os-autoinst branch at os-autoinst/os-autoinst#1022 will work.

[codecov]

Codecov Report

Merging #1782 into master will increase coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1782      +/-   ##
==========================================
+ Coverage    89.9%   89.99%   +0.08%     
==========================================
  Files         139      139              
  Lines        9791     9791              
==========================================
+ Hits         8803     8811       +8     
+ Misses        988      980       -8

Impacted Files	Coverage Δ
lib/OpenQA/Schema/Result/Workers.pm	90.1% <0%> (-6.6%)	⬇️
lib/OpenQA/Worker/Commands.pm	85.71% <0%> (-2.6%)	⬇️
lib/OpenQA/WebSockets/Server.pm	89.95% <0%> (-2.29%)	⬇️
lib/OpenQA/Worker/Common.pm	78.1% <0%> (-2.19%)	⬇️
lib/OpenQA/Scheduler/Scheduler.pm	85.26% <0%> (-0.53%)	⬇️
lib/OpenQA/Utils.pm	92.64% <0%> (+0.21%)	⬆️
lib/OpenQA/Worker/Engines/isotovideo.pm	95.54% <0%> (+0.63%)	⬆️
lib/OpenQA/Worker/Jobs.pm	82.33% <0%> (+0.91%)	⬆️
lib/OpenQA/WebAPI/Controller/LiveViewHandler.pm	97.66% <0%> (+1.16%)	⬆️
lib/OpenQA/WebAPI/Controller/Developer.pm	100% <0%> (+3.33%)	⬆️
... and 1 more

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[Martchus]

All tests passed. For further testing, I'll re-trigger the developer fullstack test nevertheless.

Note that the changes unfortunately broke os-autoinst's testsuite which needs to be adapted. What cause os-autoinst's tests to fail was just some leftover from debugging.

The fullstack test passed 2 times in a row and the developer fullstack test 6 times. No failure so far at all :-)