New upstream release.

Mostly bugfixes are include:

• buildinstall: Log message for boot config change
• livemedia: Remove title option
• Make sure repoclosure cache cleaned when running as root
• Prefix lookaside cache dir with compose id
• Prefix repoclosure cache dir with compose id
• tests: Add test for compose logger setup
• Do not write images.json if all related phases skipped
• gather: Do not write metadata if gather phase skipped
• Write global metadata about extra files
• scm: Add backend for downloading archives from Koji
• Pass compose to SCM wrappers
• Remove misleading warning about size of the ISO
• Retry watching koji tasks on server outage
• config-dump: Allow overwritting config via -e option