Add comment column in docker history command output
Add comment column in docker history command output

Signed-off-by: David Young <3bbca357ed045f18f161f4d8e64d5b12ab343df2@cn.ibm.com>

jwhonce/engine-api,msabansal/engine-api,mikedougherty/engine-api,thaJeztah/engine-api,vdemeester/engine-api,docker/engine-api,rhatdan/engine-api