Storing logs, ssh multiplexing, support r/o file systems, ...

Highlights

• Add support for ssh multiplexing
• Ignore read/only file systems reboot script errors
• Handle rsync installation on read-only distros
• Minor modification of test result specification
• Implement variables for storing logs and artifacts

Full Changelog

• Make reboot support a bit more backward compatible
• Ensure that workdir has a correct selinux context
• Use centos:stream8 image instead of centos:8
• Disable X11 forwarding in ssh connections
• Fix traceback for login after last report
• Use TMT_TEST_DATA as location for rlFileSubmit
• Implement variables for storing logs and artifacts
• Adjust rsync installation on read-only distros
• Handle rsync installation on read-only distros
• Add hardware specification for hostname
• Correctly import multiple bugs from Makefile
• Remove dependency on the python3-mock package
• Adjust linting of manual test files
• Check Markdown files in tmt lint if manual=True
• Adjust pulling logs from the guest during finish
• Add guest.pull() to the finish step
• Update virtualization hints for session connection
• Improve error message for empty git repositories
• Minor modification of test result specification
• Use where instead of on in the multihost spec
• Clarify that path is defined from the tree root
• Adjust ansible requires for containers preparation
• Move the reboot scripts to a read/write directory
• Ignore read/only file systems reboot script errors
• Require either ansible or ansible-core
• Set the TMT_TREE variable during test execution
• Clarify that 'until' means until and including
• Update test debugging examples with --force option
• Add bios.method to hardware spec
• Improve environment variables specification a bit
• Adjust the ssh connection multiplexing
• Add support for ssh multiplexing