Move ansible-odl RTDs to ansible/docs/ dir

We added RTDs docs for ansible-opendaylight in INTPAK-44. But we added them to integration/packaging/docs, so they aren't in the ansible-opendaylight repo. This forces us to duplicate additional docs in-repo, when really they should be the same docs.

Move RTDs ansible-odl docs to that repo, create job to build them, add coala linting to verify them. Can create subtasks for these TODOs.