worker: if device is not configured on the server, ignore device
worker: if device is not configured on the server, ignore device

Change-Id: Ifaa23153b2f98263ec5b03575c14ebea11eba215
(cherry picked from commit 788f5b232278f2c0b4ee9ef2f1cce6b5e09499ab)
Linaro/lava-server,Linaro/lava-server,Linaro/lava-server,Linaro/lava-server