Merge pull request #9347 from zalando-incubator/security/update/ssl-policy-control-plane

security: update Control Plane default ssl policy to `ELBSecurityPolicy-TLS13-1-2-2021-06`

Author: mikkeloscar

cluster/cluster.yaml

@@ -614,7 +614,7 @@ Resources:
     Properties:
       AlpnPolicy:
         - {{ if eq .Cluster.ConfigItems.experimental_nlb_alpn_h2_enabled "true" }}HTTP2Preferred{{else}}None{{end}}
-      SslPolicy: "ELBSecurityPolicy-TLS-1-2-2017-01"
+      SslPolicy: "ELBSecurityPolicy-TLS13-1-2-2021-06"
       Certificates:
         - CertificateArn: "{{.Values.load_balancer_certificate}}"
       DefaultActions:
@@ -681,7 +681,7 @@ Resources:
     Properties:
       AlpnPolicy:
         - {{ if eq .Cluster.ConfigItems.experimental_nlb_alpn_h2_enabled "true" }}HTTP2Preferred{{else}}None{{end}}
-      SslPolicy: "ELBSecurityPolicy-TLS-1-2-2017-01"
+      SslPolicy: "ELBSecurityPolicy-TLS13-1-2-2021-06"
       Certificates:
         - CertificateArn: "{{.Values.load_balancer_certificate}}"
       DefaultActions: