Fixes #6509 - friendlier options for content-view version promote BZ1102284

- CV versions are now searchable by CV + environment or CV + version
- workaround for katello/foreman environment name conflicts
- options --from-lifecycle-environment and --to-lifecycle-environment for version promote
Merge pull request #214 from tstrachota/cv_versions

Fixes #6509 - friendlier options for content-view version promote BZ1102284