Fix shebang broken because of license header additions

Change-Id: Ib26f389ea22b7afa2028dfa0994e19276dd3429d
diff --git a/src/test/setup/prerequisites.sh b/src/test/setup/prerequisites.sh
index dbe5206..5a0944b 100755
--- a/src/test/setup/prerequisites.sh
+++ b/src/test/setup/prerequisites.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 
 # Copyright 2017-present Open Networking Foundation
 #
@@ -13,9 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
-#!/usr/bin/env bash
-
 function usage {
     echo "usage: ${0#*/} [-h |--help] [--cord] [--venv]"
     exit 1