adding unit test for removing explicit host dump files
extracting closure for better testability, adding unit test for query_status calls from status()
adding unit test for spawned status processes
extracting closure for testability, adding unit test skeleton
adding unit test for pass-through of unreachable hosts
adding test for creation of hosts from yadt client YAML or yadt minion JSON
ran autopep8
fixing test name (was missing the _tests extension) and parallelizing integration tests
Merge branch 'master' of https://github.com/yadt/yadtshell