ISPN-263 Handle cluster partitions

https://issues.jboss.org/browse/ISPN-263

I added one more commit with some test fixes.
That is fine, unfortunately this got detracted from my original intention and I wasn't clear enough.  I was saying in the case when this node knows that others have to be in degraded mode as well.  Lets say you had numOwner=3 and 4 nodes.  If you had a 2/2 split you know each one has to be in a degraded mode.

However thinking about this more I thought of a more important one that this policy doesn't cover.  Lets say you have numOwners=3 and a cluster of 4 nodes {A, B, C, D}.  If you have an even split {A,B} & {C,D} then both clusters would continue operating like nothing happened since numOwners wasn't hit.  This obviously shouldn't be allowed though.