Increase timeout for WaitCondition test

This test has been failing intermittently in the gate. There's no
obvious pattern to the failures, and looking at a random set of logs
there's no obvious cause other than that signals don't start to come in
until very close to the timeout time. So it appear that slow nodes are
at least part of the issue. Increase the timeout to give them more time
to boot.

Change-Id: I7013d3629d0df893cefc47478f650135a616103f
1 file changed