Description of problem:
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When one of the servers in a cluster is unresolvable or unreachable from the engine, and when the cluster is imported via the Console, the following behavior is seen -

* the Add Hosts screen shows only the servers that are resolvable/reachable from engine and those servers are imported.

The Add Hosts screen should show all the existing servers regardless of whether they are resolvable/reacahable and then only those shall be imported that can be reached and resolved. For those that cannot be imported, a pop-up should be shown to the user saying that these servers cannot be imported due to these reasons.

Version-Release number of selected component (if applicable):
Red Hat Storage Console Version: 2.1.2-0.21.beta1.el6_4

How reproducible:
Always

Steps to Reproduce:
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Case A 

1. For one of the nodes in the cluster, use a hostname that is only resolvable among the storage nodes and not from the engine, for peer probe ( can be done through an entry in the /etc/hosts file )
2. Import the cluster via the Console.

Case B

1. Power off one of the nodes in the cluster to make it unreachable from the engine.
2. Import the cluster via the Conole.

Actual results:
For both cases above, the above described behavior is seen.

Expected results:
Behavior can be improved as explained above.

Additional info: