Use our own fork of go-bindata

There is confusion around what constitutes the most well-maintained
mainline for go-bindata.

The original repo owner deleted his account and someone reclaimed it.
See jteeuwen/go-bindata#5.

Also, there are many active forks of go-bindata.

This is hopefully a temporary measure.

[finishes #155027012]

ci/scripts/build-gdn-linux

@@ -9,7 +9,7 @@ set -e -u -x
 export GOPATH=$PWD/gr-release-develop
 export PATH=$PATH:$GOPATH/bin
 
-go get github.com/jteeuwen/go-bindata/go-bindata
+go get github.com/masters-of-cats/go-bindata/go-bindata
 
 LINUX_ASSETS=$PWD/linux