Use and verify event and latch wait() return using timeouts

Instead of blocking up the whole test suite when a latch or
event was not decremented to its desired value (or not set for
an event) we should use a reasonably high value that we use
when waiting for those actions to occur and verify that when those
wait() functions return that we have reached the desired state and
if not either raise an exception or stop further testing.

Fixes bug 1363739

Change-Id: I8b40282ac2db9cabd48b0b65c8a2a49610d77c4f
Merge "Use and verify event and latch wait() return using timeouts"