Title: #5656: [WIP][ipatests] Add basic support for remote ipaplatform
The main goal is replacing controller's ipaplatform with host's one.
- added basic support (JSON-serializable attributes) for remote platform's paths,
knownservices, constants, osinfo. Expose them as `host.ipaplatform.ATTR`
- added wrapper for remote systemctl which autoresolves knownservices of IPA
- added convenient host markers `skip_if_hostplatform`, `skip_if_hostcontainer`,
`skip_if_hostfips`, ` skip_if_not_hostselinux`, `skip_if_host`. Host markers being applied
at class scope skip the installation phase.
To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/5656/head:pr5656
git checkout pr5656