add ssh connection timeouts because if the nginx timeout is shorter than the ssh timeout, no response will return to strudel2 resuting in cryptic errors

Revert "don't wait on the control socket. This might introduce a race, on the other hand I've been experiencing hangs"

This reverts commit 21772750.

don't wait on the control socket. This might introduce a race, on the other hand I've been experiencing hangs

updates to tes support a) sftp connections and running stat on HSMs b) multistage connection process, getting app instance parameters, creating tunnel and finally connecting