Fine tune client retry

[sagikazarmark]

Max elapsed time is currently set to 10 seconds, but it may be too short depending on rate limit settings.

At the same time, a client may not actually want to wait for the rate limit, but fail the command.

How about adding a global flag called --client-timeout defaulting to 60 seconds.

Then the user can adjust the total maximum wait time.

[pjepri]

@sagikazarmark @iximiuz hi, is this still valid?

[iximiuz]

Hey @pjepri, I'm not certain about this issue. I've never had any networking problems with labctl, but Márk's mileage may vary, so we should probably wait for his reply, too.