Add integration tests for group_by module. Fixed bug introduced by ansible/ansible#7273 while also fixing issue described in ansible/ansible#6953
Close fds when running commands from the accelerate daemon

Fixes #7307
Merge branch 'devel' of https://github.com/cchurch/ansible into cchurch-devel
Close fds when running commands from the accelerate daemon

Fixes #7307
Merge branch 'cchurch-devel' into devel