non-root user has no permission to create directory under /opt
directory. use "become: true" to resolve it.
Change-Id: I155efc4b1e0691da0aaf6ef19ca709e9dc2d9168
Add a possibility to mount sources as volumes to containers,
in "more than documentation" way. That will let us to use kolla
as a replacement for devstack.
Partially implements: blueprint mount-sources
Change-Id: I4868ed6829bd037e1012d1f40c4a1d1b9995bf95