Add a note about restrictive firewall on rhel

RHEL/Centos/SL has a restrictive firewall by default, which
if left in an unaltered state prevents compute nodes from
talking to the controller (and therefore and unsuccessful
installation)

Since changing this is very basic sysadmin practice, just add
a small warning.

Change-Id: I5d564f612aaa6e7b14892bef79538dd3e387bfc9
Closes-Bug: 1241981
use openrc credentials to verify swift installation

Don't use the keystone admin token to authenticate, but a real user
instead (using the openrc.sh config file). This simplifies the swift
commands, and makes the verification more consistent with the
verification of other services.

Change-Id: I6a2512cb6cbb2942c9e8673f3f7d960f2f740e8e
backport: none
Improve wording for nova-network vs Neutron

Explain better that the user has two options - and needs to choose one.

Include some minor edits.

Change-Id: I40af701848eddc649cfa33d78ddab6090518d41d
Merge "Improve wording for nova-network vs Neutron"
Merge "use openrc credentials to verify swift installation"
Readded section for Floating IP creation in admin guide

A user reported a missing section in the Havana admin guide for
creating and attaching floating IP addresses. As many users still
use nova-network I thought this should be put back in. I've added
a note to point towards the basic neutron equivalent. For the Icehouse
manual we should add more detail to support the floating IP concepts in
Neutron. Will revisit.

Change-Id: Iaa4387461a6f4775acf1f86dfde7b8afe226495f
Closes-Bug: #1263203
Adds openstack-config options for Red Hat and SUSE distros

Documentation for configuring networking on dedicated network
node expected manual configuration file changes. Red Hat and SUSE
based platforms support openstack-config. These changes need to
be replicated for dedicated-network and compute host where appropriate.

Change-Id: I7cc23370fad0c441b1f8fcf8a7781c58b17fbd59
Closes-Bug: 1266409
Update whitespace and change td in thead to th

This commit just changes the autogenerated files to match what's output
after the following commits in openstack-doc-tools:
d740b7f4dd84a2142b7a370ebf3cf10f76c2a651
6708afbef1f4a662fd1b164ce3f635ad71ba7662

Change-Id: Ie48b99deb54877f9857abe94e90c9f160852aa92
Merge "Adds openstack-config options for Red Hat and SUSE distros"
Merge "Update whitespace and change td in thead to th"
Merge "Add a note about restrictive firewall on rhel"
Merge "Readded section for Floating IP creation in admin guide"