[JIRA] (OVIRT-1521) Add support for multiple distros scripts in mock_runner

Add support for multiple distros scripts in mock_runner ------------------------------------------------------- Key: OVIRT-1521 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1521 Project: oVirt - virtualization made easy Issue Type: New Feature Reporter: Daniel Belenky Assignee: Daniel Belenky Priority: Highest Currently, mock runner supports only a single execution script such as check-patch.sh, build-artifacts.sh and so on. Since we already support for multiple distros based environmental files such as *.packages.el7 or *.repos.fc25, we should also support the same syntax for the execution scripts.