Cherry picked from https://review.openstack.org/#/c/19421/

Amended basic installation docs.

Basic installation docs for compute, controller, and network inscructed the user to restart networking services out of sequence.
The sequence has now been amended so that configuration changes occur as intended.

Fixes: bug #1091855

Conflicts:

	doc/src/docbkx/basic-install/src/basic-install_network-common.xml

Change-Id: Iba883ce598324a9a9c84c87550884aa7bd7d198c