Add missing uwsgi for barbican-api Dockerfile
Add missing uwsgi for barbican-api Dockerfile

uwsgi is not installed for barbican-api in ubuntu.

Change-Id: Ibaaf7eb9dfae2f88a5a2d9c3b4983d403e52c932
Closes-bug: #1632170

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