FAB-1: Avoid goimports errors during make linter

Vendoring doesn't work unless you run from $GOPATH/src/hyperledger/fabric.
Previous fix attempted to correct package name assumptions, but this fix
works better and won't keep breaking.

Change-Id: Ib2489eb98d363be6a51a4fad5022f6b5e4d7f784
Signed-off-by: Bradley Gorman <bgorman@au1.ibm.com>

scripts/goimports.sh

@@ -6,7 +6,7 @@ declare -a arr=("./consensus" "./core" "./events" "./examples" "./membersrvc" ".
 
 for i in "${arr[@]}"
 do
-	OUTPUT="$(goimports -l $i)"
+	OUTPUT="$(goimports -srcdir $GOPATH/src/github.com/hyperledger/fabric -l $i)"
 	if [[ $OUTPUT ]]; then
 		echo "The following files contain goimports errors"
 		echo $OUTPUT