Allow kiam-agent to not remove rules on the host (#253)
Allow kiam-agent to not remove rules on the host (#253)

There are cases where kiam should not remove the iptables rules at
shutdown. This avoids cases where metadata from the host will leak
when kiam is reprovisioning, has crashed, etc, which causes any AWS
SDK to cache and try to use host credentials for hours on end.
uswitch/kiam,uswitch/kiam