Clean up local variable usage - Neutron

Change-Id: I3e19efd46cadcf0b4129a0f923fa7881f702d65c
diff --git a/lib/neutron b/lib/neutron
index a00664e..6778589 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -447,20 +447,20 @@
 # Migrated from keystone_data.sh
 function create_neutron_accounts {
 
-    SERVICE_TENANT=$(openstack project list | awk "/ $SERVICE_TENANT_NAME / { print \$2 }")
-    ADMIN_ROLE=$(openstack role list | awk "/ admin / { print \$2 }")
+    local service_tenant=$(openstack project list | awk "/ $SERVICE_TENANT_NAME / { print \$2 }")
+    local admin_role=$(openstack role list | awk "/ admin / { print \$2 }")
 
     if [[ "$ENABLED_SERVICES" =~ "q-svc" ]]; then
 
-        NEUTRON_USER=$(get_or_create_user "neutron" \
-            "$SERVICE_PASSWORD" $SERVICE_TENANT)
-        get_or_add_user_role $ADMIN_ROLE $NEUTRON_USER $SERVICE_TENANT
+        local neutron_user=$(get_or_create_user "neutron" \
+            "$SERVICE_PASSWORD" $service_tenant)
+        get_or_add_user_role $admin_role $neutron_user $service_tenant
 
         if [[ "$KEYSTONE_CATALOG_BACKEND" = 'sql' ]]; then
 
-            NEUTRON_SERVICE=$(get_or_create_service "neutron" \
+            local neutron_service=$(get_or_create_service "neutron" \
                 "network" "Neutron Service")
-            get_or_create_endpoint $NEUTRON_SERVICE \
+            get_or_create_endpoint $neutron_service \
                 "$REGION_NAME" \
                 "http://$SERVICE_HOST:$Q_PORT/" \
                 "http://$SERVICE_HOST:$Q_PORT/" \