Not sure if you wanted to make it easier on you going forward, but this is what I did.
I created an Informational Alarm that sends me an email and text message when something is vmotioned by DRS. I was tired of going through the logs to find what and when it was moving servers.
The two trigger event names I put in the definition are: "VM migrated" and "DRS VM migrated". Under action you can just set "once" on Normal->Warning.