Examine timeout behavior in collection.lookup_in

There is a test, that passes, that sets a 1 microsecond timeout then looks at the result. No timeout. Even on the integration tests.

So - that can't be. I'm guessing that the timeout isn't being actually used down in the bindings, and so lets take a look. The test in question is in couchbase/tests_v3/cases/collection_t.py - test_lookup_in_timeout. In fact, it is pretty difficult to test timeouts - probably even after fixing we could have some difficulty testing reliably.

Another approach is to do the work to mock out lcb and check what gets called. If we just had to mock the bindings (_libcouchbase), no problem. But here we would want to actually test the bindings, and whether or not they are calling the timeout correctly. That would be tougher - gotta mock in C. However that is a thing - we could do it.

But for this ticket, look at the subdoc calls, and surely we will discover the timeout isn't being correctly set, in the bindings, or passed in to the bindings.