[Docs] Old releases in docs

[Denis Klepikov]

https://docs.mirantis.com/openstack/fuel/fuel-master/reference-architecture.html#ha-deployment-for-networking

Note the following:

Public IP addresses can still be allocated to all nodes in a 5.1 Neutron environment. This can be enabled under the "Settings" tab by selecting Public network assignment -> Assign public network to all nodes. This setting is absent when using Nova-Net because a public IP address is always allocated to each node.
When using Fuel 5.1 to manage 5.0.x environments, the environment must conform to the 5.0.x practice, so each target node must have a public IP assigned to it, even when using Neutron.
Default gateways on nodes that do not have public IP addresses point to the master node's IP address for Fuel 5.1; this behavior is expected to change in future releases.

Please re-phrase this for 6.1

If you are not using the HA deployment:
  You may decrease the Public range by one IP address (which would be allocated for the Virtual IP in HA mode).

6.1 has no non-HA

Note
All 5.0.x environments and 5.1 Neutron environments for which Public network assignment -> Assign public network to all nodes is set have the same requirements as those shown for Nova-Network.

Please re-phrase this for 6.1

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/205116

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/6.1
Review: https://review.openstack.org/211924

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/205116
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=7daf16aa039be0872f3fe7a24d5d3cb8d3a42e25
Submitter: Jenkins
Branch: master

commit 7daf16aa039be0872f3fe7a24d5d3cb8d3a42e25
Author: OlgaGusarenko <email address hidden>
Date: Thu Jul 23 18:26:27 2015 +0300

    [Ref Arch] Old releases in docs

    1. Rephrases notes for the "Public and Floating IP address requirements"
    section for 6.1.

    2. Removes non-HA

    3. Improves the Example subsection

    Change-Id: I8902c3380a618844b5543785d345656f3b445e26
    Closes-bug: 1472102

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/211924
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=a517fec61f9a513656be1014fde8ee4a2052e92f
Submitter: Jenkins
Branch: stable/6.1

commit a517fec61f9a513656be1014fde8ee4a2052e92f
Author: OlgaGusarenko <email address hidden>
Date: Thu Jul 23 18:26:27 2015 +0300

    [Ref Arch] Old releases in docs

    1. Rephrases notes for the "Public and Floating IP address requirements"
    section for 6.1.

    2. Removes non-HA

    3. Improves the Example subsection

    Change-Id: I8902c3380a618844b5543785d345656f3b445e26
    Closes-bug: 1472102