test: Test machine keys against md5 and non-md5
test: Test machine keys against md5 and non-md5

We don't care which format is used, so just test against both instead of
determining what we think is used depending on the distribution.

Closes #6402

mvollmer/cockpit,dperpeet/cockpit,moraleslazaro/cockpit,garrett/cockpit,andreasn/cockpit,garrett/cockpit,garrett/cockpit,stefwalter/cockpit,xhad/cockpit,mareklibra/cockpit,stefwalter/cockpit,harishanand95/cockpit,cockpituous/cockpit,petervo/cockpit,martinpitt/cockpit,SotolitoLabs/cockpit,deryni/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,Scribery/cockpit,michalskrivanek/cockpit,dperpeet/cockpit,SotolitoLabs/cockpit,mvollmer/cockpit,Scribery/cockpit,moraleslazaro/cockpit,larsu/cockpit,martinpitt/cockpit,Scribery/cockpit,dperpeet/cockpit,harishanand95/cockpit,larsu/cockpit,cockpituous/cockpit,cockpit-project/cockpit,deryni/cockpit,petervo/cockpit,garrett/cockpit,dperpeet/cockpit,mareklibra/cockpit,larskarlitski/cockpit,andreasn/cockpit,xhad/cockpit,xhad/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,stefwalter/cockpit,larsu/cockpit,larsu/cockpit,michalskrivanek/cockpit,SotolitoLabs/cockpit,deryni/cockpit,harishanand95/cockpit,mareklibra/cockpit,Scribery/cockpit,mvollmer/cockpit,mareklibra/cockpit,deryni/cockpit,deryni/cockpit,garrett/cockpit,stefwalter/cockpit,petervo/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,cockpit-project/cockpit,petervo/cockpit,larskarlitski/cockpit,mareklibra/cockpit,michalskrivanek/cockpit,Scribery/cockpit,xhad/cockpit,mvollmer/cockpit,michalskrivanek/cockpit,dperpeet/cockpit,larskarlitski/cockpit,michalskrivanek/cockpit,mvollmer/cockpit,petervo/cockpit,petervo/cockpit,cockpit-project/cockpit,xhad/cockpit,andreasn/cockpit,larsu/cockpit,deryni/cockpit,SotolitoLabs/cockpit,dperpeet/cockpit,michalskrivanek/cockpit,dperpeet/cockpit,stefwalter/cockpit,moraleslazaro/cockpit,deryni/cockpit,SotolitoLabs/cockpit,moraleslazaro/cockpit,xhad/cockpit,larskarlitski/cockpit,harishanand95/cockpit,xhad/cockpit,cockpituous/cockpit,michalskrivanek/cockpit,stefwalter/cockpit,larskarlitski/cockpit,harishanand95/cockpit,petervo/cockpit,larskarlitski/cockpit,harishanand95/cockpit,andreasn/cockpit,martinpitt/cockpit,andreasn/cockpit,larskarlitski/cockpit,cockpituous/cockpit,Scribery/cockpit,SotolitoLabs/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,mareklibra/cockpit,andreasn/cockpit,cockpit-project/cockpit,larsu/cockpit,stefwalter/cockpit,harishanand95/cockpit,cockpit-project/cockpit,Scribery/cockpit,mareklibra/cockpit,martinpitt/cockpit