*NOTE* the changes described in this ticket were over-written by changes made for
the connPoolStats command only inspects the "globalConnPool" which stores dbclientinterface style connections. Now that we only use those types of connections in a few places the command is significantly less useful. We should add stats about the NetworkInterface managed connections into its output to make it useful again.
Proposed new output:
There may now be several connection pools in use within the server at any given time. For each connection pool we will report a list of the hosts it contains connections for, and how many of those connections are in use. We'll also provide the total number of connections being made through that pool.