Added amazon+kops

Author: ewoutp

docs/design/acceptance_test_platforms.md

@@ -5,6 +5,7 @@ executed on the following platforms:
 
 - Google GKE, with Kubernetes version 1.10
 - Amazon EKS, with Kubernetes version 1.10
+- Amazon & Kops, with Kubernetes version 1.10
 - Azure AKS, with Kubernetes version 1.10
 - Openshift, based on Kubernetes version 1.10
 - Bare metal with kubeadm 1.10