* Adding yaml linter to ci check
* Minor linting fixes from yamllint
* Changing CI to install python pkgs from requirements.txt
- adding in a secondary requirements.txt for tests
- moving yamllint to tests requirements
Updates based on feedback
Simplify checks for file exists
remove invalid char
Review feedback. Use regular systemd file.
Add template for docker systemd atomic
Oliver Moser
Brad Beam
Paweł Skrzyński
Vijay Katam
Alexander Block
Antoine Legrand
Brandon B. Jozsa