* Fix the path for the sample files
* Change the title to include the word OVN
* Remove the networking-ovn references
* Fix host OS versions recommendations
* Run "nova-manage cell_v2 discover_hosts" prior to listing the
hypervisors
Change-Id: Id2ce2a8913a9fb5ce9482b360dea9503a0b279da
Signed-off-by: Lucas Alvares Gomes <lucasagomes@gmail.com>