[test] Added yielding for tests that spawn a thread for connect #2883
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The problem: although the call of
srt_accept_bond
is given 2s timeout, it may still happen to not be enough, especially when testing on a weak, loaded machine.Added the call to
this_thread::yield()
to make the thread switched to the spawned one so that it can at least start calling thesrt_connect
method beforesrt_accept_bond()
is going to pick it up. This should help with falsely failing tests in Travis.