Change timeout option from absolute to relative time

[dfarr]

No description provided.

[avillega]

Not something we need to do in this PR, but if the bridge has an instance of clock now it should be used in other places where we use time, like when putting stuff in the delay queue.

[dfarr]

Not something we need to do in this PR, but if the bridge has an instance of clock now it should be used in other places where we use time, like when putting stuff in the delay queue.

I actually decided to remove clock from the bridge, the bridge is free to look at the time and the scheduler/simulator use the clock (but the scheduler uses it indirectly via the dependencies).