This change corrects problems reported by the `yamllint` linter.
Since key duplication problems were removed in 4d48711, this commit
mainly fixes trailing spaces and extra empty lines at beginning/end of
files.
ansible-playbook now works when run with a playbook
that includes a role that includes another role
specified using csv format
Updated one of the roles used in the tests to fix
broken tests - `make test_galaxy` now works
Fixes#11486. Also addresses the problem alluded to in #10620.
Older git archive commands create tar archives even with a tar.gz
extension. So change it to always create tar archives and have
the install_role method cope.
Removed ssh roles from the test case as they don't work unless
you can connect to bitbucket via ssh and have your key there.
Corrected a minor typo in error messages
