Fix vagrant regression

(cherry picked from commit 1a894741b24dcfe621e998380a098ef0d592ee81)
Add image related events to kubelet.

(cherry picked from commit 6d3324c3fdbb67c66d94bb22823b69f748d6117e)
Merge pull request #2499 from jbeda/release-0.5

Some v0.5 cherry picks