Collect logs at the end of gate
Collect logs at the end of gate

Collecting more logs will be helpful for use to debug the gate.

Closes-Bug: #1650552
Change-Id: I5e243c4e5075215cbed57b65655c99f2ddcadaaf

coolsvap/kolla,nihilifer/kolla,GalenMa/kolla,stackforge/kolla,stackforge/kolla,intel-onp/kolla,GalenMa/kolla,nihilifer/kolla,stackforge/kolla,coolsvap/kolla,openstack/kolla,mrangana/kolla,rahulunair/kolla,mrangana/kolla,rahulunair/kolla,intel-onp/kolla,coolsvap/kolla,openstack/kolla