[JIRA] (OVIRT-1238) [gerrit hooks] add more logic to set_modified hook

[gerrit hooks] add more logic to set_modified hook -------------------------------------------------- Key: OVIRT-1238 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1238 Project: oVirt - virtualization made easy Issue Type: Bug Reporter: Shlomo Ben David Assignee: infra Add new logic to check that the bug milestone is newer or equal to the patch branch and only if the branch (for the newer milestone) doesn't exist it will change the bug status to MODIFIED.