I recently downloaded OnCommand Workflow Automation 2.1RC1     build from NetApp support site and I tried integrating with the OnCommand UM 6.1 . Luckily, it worked 
I had choose OnCommand UM 6.0 as option while selecting the OC UM version but actually it is 6.1 version.
I was able to add NetApp Filers as source data and successfully executed few workflows like creating volumes and volume move .