CameraInput stalls for 10 seconds on the test run

[132ikl]

In rare cases (currently only demonstrated through hardware issues) CameraInput will successfully create a VideoCapture object, however on the test run of the node the read() call will block until select times out (10 seconds, which is longer than the frontend XHR timeout). There should be a timeout for a more reasonable time, such as 1 second since a camera read should never take that long, and return the error properly.