test sudoers host_list and user_list

[japaric]

cc #96

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (7c5a0cd) 67.85% compared to head (5bb5547) 67.85%.

❗ Current head 5bb5547 differs from pull request most recent head c30ec21. Consider uploading reports for the commit c30ec21 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #145   +/-   ##
=======================================
  Coverage   67.85%   67.85%           
=======================================
  Files          29       29           
  Lines        3232     3232           
=======================================
  Hits         2193     2193           
  Misses       1039     1039           

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[squell]

I have some minor comments but they only relate to comments and test case naming. Of course one thing that is still missing from these is the Host_Alias mechanism, but that can be a whole batch of test-case in itself.