add keepalives as an options to the console tool

hello,
wanted to mention something that I think would be pretty simple to add,
though its clearly a rare issue.

in our case we have several datacenters connected by vpn links.  like
most vpns it watches for stale sessions and clears them to keep its
state tables reasonably clean.  what was happening was if you were
working with the console tool on a device and lets say were waiting to
see output or just leaving the connection open for later work you would
often find the tcp connection between "console" and the remote
conserver.  this was only mildly annoying but since when do we not fix
the mildly annoying :)

I took the easy way out and am using libkeepalive to send keepalives on
my console connections however it would be a nice to have to add a flag
to console to be able to set the tcp_keepalives on the ssl connections
it makes.

-denis

-- 
__________________________
Denis Alan Hainsworth     
denis@alumni.brandeis.edu