Add non-collaborators removal tests
Add non-collaborators removal tests

This validates that only added users can be flagged as non-trusted by
the verify-owners plugin.

Also rename entries in ownersFiles and ownersAliases to be more
descriptive and added leading spaces to patches to be closer to
reality.

cblecker/test-infra,fejta/test-infra,BenTheElder/test-infra,jessfraz/test-infra,michelle192837/test-infra,kubernetes/test-infra,ixdy/kubernetes-test-infra,monopole/test-infra,cblecker/test-infra,michelle192837/test-infra,ixdy/kubernetes-test-infra,kubernetes/test-infra,michelle192837/test-infra,cjwagner/test-infra,cjwagner/test-infra,dims/test-infra,brahmaroutu/test-infra,BenTheElder/test-infra,brahmaroutu/test-infra,ixdy/kubernetes-test-infra,BenTheElder/test-infra,brahmaroutu/test-infra,fejta/test-infra,cjwagner/test-infra,monopole/test-infra,ixdy/kubernetes-test-infra,dims/test-infra,jessfraz/test-infra,pwittrock/test-infra,monopole/test-infra,fejta/test-infra,BenTheElder/test-infra,kubernetes/test-infra,kubernetes/test-infra,brahmaroutu/test-infra,cblecker/test-infra,BenTheElder/test-infra,kubernetes/test-infra,dims/test-infra,michelle192837/test-infra,dims/test-infra,jessfraz/test-infra,ixdy/kubernetes-test-infra,pwittrock/test-infra,monopole/test-infra,monopole/test-infra,kubernetes/test-infra,michelle192837/test-infra,pwittrock/test-infra,fejta/test-infra,cblecker/test-infra,BenTheElder/test-infra,jessfraz/test-infra,fejta/test-infra,pwittrock/test-infra,brahmaroutu/test-infra,cjwagner/test-infra,fejta/test-infra,cjwagner/test-infra,cblecker/test-infra,dims/test-infra,dims/test-infra,monopole/test-infra,michelle192837/test-infra,cblecker/test-infra,brahmaroutu/test-infra,pwittrock/test-infra,cjwagner/test-infra,jessfraz/test-infra,jessfraz/test-infra