Cherry-pick #8240 to 6.4: Clone any cached data from docker and k8s#8246

Merged

ph merged 1 commit intoelastic:6.4from ph:backport_8240_6.4

Sep 6, 2018

+3-2

Commits on Sep 5, 2018

Clone any cached data from docker and k8s (elastic#8240 )
ph
committed