Connecting to nodes via SSH is not covered in documentation

[Dmitriy Novakovskiy]

I've deployed a cloud w/ fuel 5.1. Now I need to ssh to my controller to do stuff. It takes a journey and chatroom talk to figure out how to:

1) Connect to Fuel master w/ standard root pass
2) Copy/regenerate keypairs to access the rest of nodes
3) Put together a list of node names/IPs for the rest of the nodes
4) Import keypairs on my Mac
5) Actually get SSH to my nodes

This should be described in documentation

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/125296

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/125296
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=95af9677667ad39fd8d5db79aa138a061f2d7aa3
Submitter: Jenkins
Branch: master

commit 95af9677667ad39fd8d5db79aa138a061f2d7aa3
Author: Fabrizio Soppelsa <email address hidden>
Date: Wed Oct 1 13:25:33 2014 +0400

    Accessing the shell

    Public key for target nodes defined in Settings tab; doc'ed
    in User Guide section.

    New section in Operations Guide covers:
    - 0100-public-keys -- how to manually upload a Public Key
    - 0200-ssh-fuel-master -- how to ssh into Fuel Master
    - 0300-ssh-target-nodes -- how to ssh into target nodes

    The XFS and two Galera sections were erroneously nested
    under "Introduction" so I had to make those top-level headers
    to avoid having them nested under this material.

    Change-Id: Idc457ac705be5a1e505e3721efbddd331d4bd973
    Closes-Bug: 1375825