[doc] Docs. We can not redeploy node like MongoDB

[Denis Klepikov]

http://docs.mirantis.com/openstack/fuel/fuel-6.0/operations.html#redeploy-a-compute-or-storage-node

Additional to
https://bugs.launchpad.net/fuel/+bug/1401295

Redeploying a node refers to the process of changing the roles that are assigned to it. For example, you may have several nodes that run both Compute and Storage roles and you want to redeploy some of those nodes to be only Storage nodes while others become only Compute nodes. Or you might want to redeploy some Compute and Storage nodes to be MongoDB nodes.

Should be:

Redeploying a node refers to the process of changing the roles that are assigned to it. For example, you may have several nodes that run both Compute and Storage roles and you want to redeploy some of those nodes to be only Storage nodes while others become only Compute nodes.

5 Use the same Fuel screen to assign an appropriate role to each node being redeployed.
6 Click on the "Deploy Changes" button.
Should be:
5 Use the same Fuel screen to assign an appropriate role to each node being redeployed.
5.1 Change, if needed, nodes interface settings (networks, placed on Ethernet controllers) (add link to Mapping logical networks to physical interfaces on servers)
5.1.1 Check the connectivity between the nodes by running Verify Networks.
5.2 Change, if needed, disk partitioning.
6 Click on the "Deploy Changes" button.

Add a Compute or Storage node

Click the "Add Node" button; on the screen described in Assign a role or roles to each node server; the unallocated node will be displayed. Assign the role or roles to the node that you want.

Should be:
Click the "Add Node" button; on the screen described in Assign a role or roles to each node server; the unallocated node will be displayed. Assign the role or roles to the node that you want.
Change, if needed, nodes interface settings (networks, placed on Ethernet controllers)(add link to Mapping logical networks to physical interfaces on servers)
Check the connectivity between the nodes by running Verify Networks.
Change, if needed, disk partitioning.

Add a Controller node

Use the Assign a role or roles to each node server screen to assign the Controller role to each node.
Change, if needed, nodes interface settings (networks, placed on Ethernet controllers)(add link to Mapping logical networks to physical interfaces on servers)
Check the connectivity between the nodes by running Verify Networks.
Change, if needed, disk partitioning.
Check the connectivity between the nodes by running Verify Networks.

[Ryan Moe (rmoe)]

Medium priority bugs are not backported to stable releases.