Cleanup RUN commands in base Dockerfile
Cleanup RUN commands in base Dockerfile

This will merge several RUN statements into one RUN statement to reduce
the number of the layers of the base Docker image.

TrivialFix

Change-Id: I69b00b2e7fa7717923f0fe364c5be9b38a2dbb90

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