Set SleepDelay function in AWS
Set SleepDelay function in AWS

Works around nil SleepDelay problem: latest aws-sdk-go (in k8s 1.9 and
kops 1.8) has updated SleepDelay logic; fix is in
https://github.com/kubernetes/kubernetes/pull/55307 but that is only in
1.9.

Set the SleepDelay to work around the problem.

andrewsykim/kops,chrislovecnm/kops,blakebarnett/kops,chrislovecnm/kops,chrislovecnm/kops,blakebarnett/kops,tsupertramp/kops,tsupertramp/kops,andrewsykim/kops,gambol99/kops,tsupertramp/kops,justinsb/kops,justinsb/kops,blakebarnett/kops,aledbf/kops,mad01/kops,aledbf/kops,mad01/kops,andrewsykim/kops,blakebarnett/kops,andrewsykim/kops,chrislovecnm/kops,mad01/kops,justinsb/kops,gambol99/kops,kubernetes/kops,aledbf/kops,gambol99/kops,robinpercy/kops,kubernetes/kops,kubernetes/kops,gambol99/kops,mad01/kops,robinpercy/kops,aledbf/kops,robinpercy/kops,robinpercy/kops,tsupertramp/kops