tox fails when Sphinx is installed before fuel-plugin-builder. There's
probably a missing requirement somewhere but reverting the list fixes
the issue for now.
This change upgrades the package version to 4.0.0 to use the reexecute_on
All tasks defined in tasks.yaml are moved in deployment_tasks.yaml
to leverage this new feature.
The deployment order with 'priority' cannot be set but the only
requirement this plugin has is to be deployed before lma_collector,
which is always the case as long as lma_collector is deployed at