Correct name of source archive if reference contains '/'
Correct name of source archive if reference contains '/'

If we have reference like stable/kilo name of source archive
will contain only last part of reference. We should replace '/'
with '-' to have full name. This is useful for correct
identification of source code afterwards.

Change-Id: I1ff1015e3f7926110d0fcb59504e58a5e80a75f9
Closes-Bug: #1492279

limamauricio/mykolla,limamauricio/mykolla,GalenMa/kolla,negronjl/kolla,stackforge/kolla,dardelean/kolla-ansible,negronjl/kolla,nihilifer/kolla,negronjl/kolla,GalenMa/kolla,limamauricio/mykolla,fdumpling/kolla,coolsvap/kolla,fdumpling/kolla,coolsvap/kolla,tonyli71/kolla,dardelean/kolla-ansible,dardelean/kolla-ansible,intel-onp/kolla,coolsvap/kolla,mrangana/kolla,mrangana/kolla,rahulunair/kolla,mandre/kolla,stackforge/kolla,toby82/kolla,toby82/kolla,rajalokan/kolla,mandre/kolla,toby82/kolla,fdumpling/kolla,stackforge/kolla,intel-onp/kolla,tonyli71/kolla,mandre/kolla,rahulunair/kolla,rajalokan/kolla,nihilifer/kolla,openstack/kolla,rajalokan/kolla,openstack/kolla