New upstream release

• Correct irc network name & add matrix room
• Add missing mock to osbs tests
• osbs: Reuse images from old compose
• image_build: Allow reusing old image_build results
• Allow ISO-Level configuration within the config file
• Work around ODCS creating COMPOSE_ID later
• When cts_url is configured, use CTS /repo API for buildContainer yum_repourls.
• Add COMPOSE_ID into the pungi log file
• buildinstall: Add easy way to check if previous result was reused