change source to . in gnocchi-base dockerfile
change source to . in gnocchi-base dockerfile

TrivialFix

Change-Id: I6b2d9331f5f28999f0d6cd037357883fdf0770a3

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