Ignore pinging dusty on PR's
Ignore pinging dusty on PR's

Adds Dusty to the user blacklist so he doesn't get pinged.

rupalibehera/kompose,procrypt/kompose,cdrage/kompose,kadel/kompose,skippbox/kompose,skippbox/kompose,surajnarwade/kompose,kubernetes/kompose,rupalibehera/kompose,procrypt/kompose,procrypt/kompose,kubernetes/kompose,kadel/kompose,cdrage/kompose,surajnarwade/kompose,ashetty1/kompose,ashetty1/kompose,ashetty1/kompose,skippbox/kompose,rupalibehera/kompose,surajnarwade/kompose