Log backup item action error when it occurs
Log backup item action error when it occurs

If a backup item action errors, log the error as soon as it occurs, so
it's clear when the error happened. Also include information about the
groupResource, namespace, and name of the item in the error.

Signed-off-by: Andy Goldstein <f9f15225913dfefeeed67d49bbada67d1dd4ac7a@gmail.com>

heptio/ark,heptio/ark