New upstream release

• Allow setting CTS parent_compose_ids using --parent-compose-id option.
• Replace -c parameter with --config
• doc: Update doc/contributing.rst
• Allow squashfs-only and configuration_file in lorax_options
• Hardlink or copy scratch builds always
• Retry ostree installer task on losetup error
• Make sure old_repo_dir for reusing exists
• Retry buildinstall tasks on losetup error
• Allow including scratch module builds
• Unpack RPMs using rpm2archive
• Create arch repo when reusing failed
• createiso: Ignore errors when deleting staging dir
• Remove buffering when running koji commands
• Check if composeinfo-base.json exists before creating it.
• buildinstall: Improve error reporting when lorax fails