Update Dockerfile to use hyperledger as repo

Dockerfile

@@ -2,7 +2,7 @@ FROM quay.io/monax/build:0.16
 MAINTAINER Monax <support@monax.io>
 
 ENV TARGET burrow
-ENV REPO $GOPATH/src/github.com/monax/$TARGET
+ENV REPO $GOPATH/src/github.com/hyperledger/$TARGET
 
 ADD ./glide.yaml $REPO/
 ADD ./glide.lock $REPO/

tests/build_tool.sh

@@ -28,7 +28,7 @@ then
   REPO=`pwd`
   CI="true"
 else
-  REPO=$GOPATH/src/github.com/monax/$TARGET
+  REPO=$GOPATH/src/github.com/hyperledger/$TARGET
 fi
 
 release_min=$(cat $REPO/version/version.go | tail -n 1 | cut -d \  -f 4 | tr -d '"')