add ENDPOINT_TYPE for keystonercv3

Change-Id: I997490ae9deb47a685ac66aaff6fd7cd87f900f1
diff --git a/keystone/files/keystonercv3 b/keystone/files/keystonercv3
index 9da173c..bf2b3ad 100644
--- a/keystone/files/keystonercv3
+++ b/keystone/files/keystonercv3
@@ -9,4 +9,5 @@
 export OS_PASSWORD={{ server.admin_password }}
 export OS_REGION_NAME={{ server.region }}
 export OS_INTERFACE=internal
+export OS_ENDPOINT_TYPE="internal"
 export OS_CACERT="{{ server.cacert }}"