[JIRA] (OVIRT-1652) [gerrit hooks] add change-restored hook

[gerrit hooks] add change-restored hook --------------------------------------- Key: OVIRT-1652 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1652 Project: oVirt - virtualization made easy Issue Type: Task Reporter: Shlomo Ben David Assignee: Shlomo Ben David Currently, when a developer abandons a patch the update tracker hook updates the external tracker status to ABANDONED. When the patch restored the external tracker doesn't change and its status remains on ABANDONED.