spread: improve resilience of lxd-type-base test

[lengau]

This test often times out on lxc stop on Google runners.

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#4236

[codecov-commenter]

Codecov Report

Merging #4239 (d5edb7e) into main (f5b2f2e) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main    #4239   +/-   ##
=======================================
  Coverage   88.96%   88.96%           
=======================================
  Files         295      295           
  Lines       20151    20151           
=======================================
  Hits        17928    17928           
  Misses       2223     2223           

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[sergiusens]

can this go to hotfix/7.5 first?

[sergiusens]

nevermind, everything seems more funtional today

[sergiusens]

remember, no merge commits in main

[lengau]

@sergiusens oops, sorry - meant to squash.