* Move shared volume configuration from stack.sh to stackrc
* Move Nova network and vnc/spice configuration settings from stack.sh
into lib/nova
* Rename NET_MAN to NETOWRK_MANAGER to match nova.conf attribute name
Change-Id: I9bd2955def553499aa832eda1f0959afe494206a
Add ROOTSLEEP parameter to avoid 10 second sleep.
Add host argument to mysql password change command so that it
will still work if mysql is already installed and running
(otherwise, the my.cnf created immediately prior takes precedence).
Add timeouts when waiting for things to start so they aren't in
infinite loops.