Add autoscaling policy to master role

pkg/model/iam/iam_builder.go

@@ -140,6 +140,17 @@ func (b *IAMPolicyBuilder) BuildAWSIAMPolicy() (*IAMPolicy, error) {
 			Resource: []string{"*"},
 		})
 
+		p.Statement = append(p.Statement, &IAMStatement{
+			Effect: IAMStatementEffectAllow,
+			Action: []string{
+				"autoscaling:DescribeAutoScalingGroups",
+				"autoscaling:DescribeAutoScalingInstances",
+				"autoscaling:SetDesiredCapacity",
+				"autoscaling:TerminateInstanceInAutoScalingGroup",
+			},
+			Resource: []string{"*"},
+		})
+
 		// Restrict the KMS permissions to only the keys that are being used
 		kmsKeyIDs := sets.NewString()
 		for _, e := range b.Cluster.Spec.EtcdClusters {