[email Maher Al Kilani]

I am using jgroups lib. I noticed that when one of the nodes is down, the
lazyRemovalCache class tags it removable and all the nodes stay in
logical_addr_cache (in TP.java). So when sending a message we are actually
sending to all the removable and the alive ones. How can configure the
lazyRemovalCache class to not tag as removable but rather remove the dead
nodes?

Bela: let's make the timeout and max size configurable. Plus, possibly add a getter, so we can hard-flush the caceh programmatically