Revert "Setting OS_INTERFACE to internal for rc v2"

This reverts commit dc4331d2a47115b9cab1044ae6ea9820be8de19c.

keystonerc file is placed on ctl nodes in root directory. Users with access to this file MUST have admin privileges of keystone.
Due to this patch admin users cannot perform admin operations like 'openstack endpoint list' and we got a blocker bug PROD-16184.

Change-Id: I974d62599460cd9365c8f06335dd814752733ac2
diff --git a/keystone/files/keystonerc b/keystone/files/keystonerc
index e4d7306..15634a2 100644
--- a/keystone/files/keystonerc
+++ b/keystone/files/keystonerc
@@ -6,6 +6,5 @@
 export OS_REGION_NAME={{ server.region }}
 export OS_SERVICE_TOKEN={{ server.service_token }}
 export OS_SERVICE_ENDPOINT="http://{{ server.bind.private_address }}:{{ server.bind.private_port }}/v2.0/"
-export OS_INTERFACE=internal
 export OS_ENDPOINT_TYPE="internal"
 export OS_CACERT="{{ server.cacert }}"