Adds "/v2" suffix to Tuskar endpoint

Tuskar endpoint was registered with no suffix.
That way Keystone provides user with not working endpoint to Tuskar b/c
Tuskar do not work without version suffix in path.
Currently Tuskar supports only v2 version/suffix.

Change-Id: Ic97fa887012c0f1d3a74d1f4f8939ce32d5cfac2

scripts/register-endpoint

@@ -85,7 +85,7 @@ case "$TYPE" in
         SUFFIX="/services/Cloud"
         ADMIN_SUFFIX="/services/Admin"
         ;;
-    image|baremetal|network|metering|management)
+    image|baremetal|network|metering)
         SUFFIX="/"
         ;;
     orchestration|volume)
@@ -111,6 +111,9 @@ case "$TYPE" in
         SUFFIX="/"
         ADMIN_SUFFIX="/admin"
         ;;
+    management)
+        SUFFIX="/v2"
+        ;;
     *)
         echo "Unknown service type" >&2
         exit 1