Test button in epmp 1000

Please include test button, its very helpful as we see it in airOS.

If I had a way to give this 100 thumbs up I would. I have mentioned this for the last 2 years at Wispapalooza to both Sakid and Dmitry. And I requested this from John Seaman when he came to our office earlier this month. In my opinion this is the ONLY thing better about UBNT at this time, Please make this happen.