Added
- New reusable class for resource log fetch actions
- New action `fetch_nuvlabox_log` to fetch the logs from all components of an
existing NuvlaBox
Changed
- Rename all connectors to enhance code clarity
- Deployment utils - Move functions from deployment actions to utils module
- Docker compose - Do not fail if "docker-compose pull" fails during
start/update of an app
- Docker compose validate action. BugFix on replacing the empty env variables so
the check runs successfully when the compose file is correct.