Fix misc test failures stream and non-stream builds

From https://github.com/jmikola/mongo-php-driver/commit/eb4914ff8275e640b5abaff2980b478f1bc18f3f:

> The MongoLog level variation tests include an extra "found connection" log message when compiled with streams, due to an additional mongo_manager_find_by_hash() call when applying the stream context to each server. Allowing for an optional line with "%A" is the easiest way to keep the expected output portable between stream/non-stream builds.