Option "auth_plugin" is deprecated.

Option "auth_plugin" from group "keystone_authtoken" is deprecated.
Use option "auth_type" from group "keystone_authtoken".

Change-Id: I01371bd924114d6470e960a91a3045fe7dc22339
Closes-Bug: #1528746
diff --git a/lib/keystone b/lib/keystone
index 6b4118d..60f86fe 100644
--- a/lib/keystone
+++ b/lib/keystone
@@ -443,7 +443,7 @@
     local signing_dir=$3
     local section=${4:-keystone_authtoken}
 
-    iniset $conf_file $section auth_plugin password
+    iniset $conf_file $section auth_type password
     iniset $conf_file $section auth_url $KEYSTONE_AUTH_URI
     iniset $conf_file $section username $admin_user
     iniset $conf_file $section password $SERVICE_PASSWORD