sensorgnomes that self-registered from March 30 to May 15 2017 have bad tunnel_port

[jbrzusto]

The following receivers won't be able to establish a connection to our server for remote
troubleshooting, and their web interface will not be visible via our server's realtime page:

Date Registered	Serial Number
-	Raspberry Pi
Apr 24	SG-1D53RPI233CD
Apr 24	SG-3ED1RPI2F303
Apr 24	SG-D7D1RPI23164
May 2	SG-1253RPI32253
May 1	SG-1D53RPI333CD
Apr 26	SG-26F1RPI358CC
May 1	SG-3ED1RPI3F303
May 4	SG-4A7DRPI3EA8E
Apr 29	SG-7B7ARPI30F4D
May 2	SG-CCD3RPI30FD2
May 1	SG-D7D1RPI33164
May 2	SG-F28CRPI33503
-	Beaglebone
Apr 21	SG-1914BBBK0825
Apr 21	SG-1914BBBK0833
Apr 21	SG-1914BBBK0856
Apr 21	SG-1914BBBK0863
Apr 21	SG-1914BBBK0873
Apr 21	SG-1914BBBK0907
Apr 21	SG-1914BBBK0917
Apr 22	SG-1914BBBK0942
Apr 4	SG-2516BBBK056B
Apr 21	SG-4416BBBK1111