[release-1.6.3] Cherrypick eviction fix from release-1.6#46049

Merged

enisoc merged 1 commit intokubernetes:release-1.6.3from enisoc:eviction-1.6.3

May 19, 2017

+1-4

Commits on May 18, 2017

Fix kubelet panic during disk eviction introduced in 1.6.3.

dashpole
authored and
enisoc
committed