Updated the VMware nova driver documentation for Havana

backport: havana

Fixes bug #1239860

Change-Id: I05989c16940ad7e3de3b79d25eb6771a3a243530
(cherry picked from commit ddef99d7834d1da5e96dec4f3f8af0a26be2fda6)
Install Guide: Change order of cinder setup

First update the configuration file, then run openstack-db

Change-Id: I69aad78243238c31aa47306ebdcf7d5ab33f6873
backport: havana
Closes-Bug: #1246391
(cherry picked from commit 3dd4a18dd93feadcd869ceecce8228e56aca8c92)
Fix heat endpoint in install guide

The previous endpoint description was plain wrong.

This patches to use the endpoint as described in:
https://github.com/openstack-dev/devstack/blob/master/files/keystone_data.sh

backport: havana

Change-Id: Ic90bace1e60f3cfddf00dd5594cee5d083b75ae7
(cherry picked from commit ce0b6d23484646e34b59fba09b8138b451015825)
Merge "Fix heat endpoint in install guide" into stable/havana
Merge "Install Guide: Change order of cinder setup" into stable/havana
Merge "Updated the VMware nova driver documentation for Havana" into stable/havana