Remove more instances of GOPATH from Makefile and CI (#13450)

Automatic Merge

scripts/test.sh

@@ -8,6 +8,7 @@ GOFLAGS=$2
 PACKAGES=$3
 TESTS=$4
 TESTFLAGS=$5
+GOBIN=$6
 
 PACKAGES_COMMA=$(echo $PACKAGES | tr ' ' ',')
 
@@ -18,7 +19,7 @@ find . -type d -name data -not -path './vendor/*' | xargs rm -rf
 $GO test $GOFLAGS -run=$TESTS $TESTFLAGS -v -timeout=2000s -covermode=count -coverpkg=$PACKAGES_COMMA -exec $DIR/test-xprog.sh $PACKAGES 2>&1 > >( tee output )
 EXIT_STATUS=$?
 
-cat output | $GOPATH/bin/go-junit-report > report.xml
+cat output | $GOBIN/go-junit-report > report.xml
 rm output
 find . -name 'cprofile*.out' -exec sh -c 'tail -n +2 "{}" >> cover.out ; rm "{}"' \;
 rm -f config/*.crt