Add git short sha1 to timestamp
Add git short sha1 to timestamp

Change-Id: I74ecc8928193e1d55b8e4130daed70bf5488fa79

yamt/networking-midonet,yamt/networking-midonet,midonet/python-neutron-plugin-midonet,midonet/python-neutron-plugin-midonet,JoeMido/networking-midonet,JoeMido/networking-midonet