Add a timeout flag

[nikhiljindal]

The tool keeps trying indefinitely. We should add a timeout flag so that it gives up after some time.

[G-Harmon]

Is there some particular step/steps that you're thinking of? Waiting for some annotation to show up?

[nikhiljindal]

good point. the timeout can be per operation timeout or a global timeout. with global timeout, all operations should complete within that time.