ConnectionStrategies: Random and RoundRobin

[David Blevins]

Just added two new connection strategies for the clustering/failover  
logic.

RoundRobin:  As the name implies each request just goes to the next  
server in the list.  It does this on every request as sort of a cheap  
load balancer.

Random:  Similar to the above but it picks a server randomly from the  
available servers, excluding the previously invoked server if  
possible. So you should hit a new server, but not necessarily rolling  
down the list in order.

I'd like to create some way to configure this for an individual app  
(or even an individual bean).  Thinking maybe some annotation and  
openejb-jar.xml meta data that we can swizzle all the way to the  
client code.

Thoughts?

-David