UUID Token provider in keystone.conf

Token provider needs to be set to uuid.Provider when the token format is
UUID. PKI is the default.

Change-Id: I967289524a50f650cdf2476d5067d263dbf55b03
Fixes: bug #1201639
diff --git a/lib/keystone b/lib/keystone
index 1b6970d..e7e0544 100644
--- a/lib/keystone
+++ b/lib/keystone
@@ -132,6 +132,11 @@
 
     iniset $KEYSTONE_CONF DEFAULT admin_token "$SERVICE_TOKEN"
     iniset $KEYSTONE_CONF signing token_format "$KEYSTONE_TOKEN_FORMAT"
+
+    if [[ "$KEYSTONE_TOKEN_FORMAT" = "UUID" ]]; then
+        iniset $KEYSTONE_CONF token provider keystone.token.providers.uuid.Provider
+    fi
+
     iniset $KEYSTONE_CONF sql connection `database_connection_url keystone`
     iniset $KEYSTONE_CONF ec2 driver "keystone.contrib.ec2.backends.sql.Ec2"