This change allows using a local directory or tarball to build from
sources by specifying the 'local' type in your kolla-build.conf:
[keystone-base]
type=local
location=/home/martin/src/keystone
[neutron-server-plugin-networking-cisco]
type=local
location=/tmp/networking-cisco.tar.gz
Closes-Bug: #1509625
Co-Authored-By: Martin André <m.andre@redhat.com>
Change-Id: I3f6f68b0f44efdac653d186d2625591ad7cb3b2a