add protocol4 as allowed to master
add protocol4 as allowed to master

kubernetes/kops,justinsb/kops,robinpercy/kops,robinpercy/kops,kubernetes/kops,aledbf/kops,kubernetes/kops,aledbf/kops,robinpercy/kops,justinsb/kops,justinsb/kops,aledbf/kops,robinpercy/kops,aledbf/kops