On the status page, if a job was queued via a timer or some way other than a gerrit change id, the git commit id would be too long for the change box. Limit it to 7 chars. Co-Authored-By: Sergey Lukjanov <slukjanov@mirantis.com> Change-Id: I4f54845675d11e4f76240cf4bf7b48f28f3e7d6a