Configure zun-api to use apache.
Fix zun endpoint (tenant_id) causes a 404 error.
Fix zun.conf options
Change zun port, correct port is 9517
Zun compute need privileged and mount docker lib volume

Change-Id: Id9455e7dde62e1994a3f6ae8f30d378e5cda4262
Closes-Bug: #1682165