For processes run using "in-memory" mode sharing the same runtime dir,
we add support for connecting to the separate instance sockets created
using ":1", ":2" etc. via new "-i" or "--instance" argument. Add details
on connecting to separate instances to the telemetry howto document.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Ciara Power <ciara.power@intel.com>
Tested-by: Conor Walsh <conor.walsh@intel.com>