istio: allow to change tls cipher suites and headers

Signed-off-by: Pascal Sthamer <10992664+P4sca1@users.noreply.github.com>

charts/shuffle/values.yaml

@@ -1632,18 +1632,30 @@ istio:
       httpsRedirect: false
     ## @param istio.gateway.https.enabled Enable HTTPS server on port 443
     ## @param istio.gateway.https.tlsCredentialName The name of the secret that holds the TLS certs including the CA certificates.
+    ## @param istio.gateway.https.tlsCipherSuites If specified, only support the specified cipher list.
     ## NOTE: The secret must exist in the namespace of the istio gateway pod
+    ##
     https:
       enabled: false
       tlsCredentialName: ""
+      tlsCipherSuites: []
     ## @param istio.gateway.extraServers Additional servers for the Gateway resource
     ## ref: https://istio.io/latest/docs/reference/config/networking/gateway/#Server
+    ##
     extraServers: []
 
   virtualService:
     ## @param istio.virtualService.annotations Additional annotations for the VirtualService resource.
     ##
     annotations: {}
+    ## @param istio.virtualService.backendHeaders Header manipulation rules for backend traffic
+    ## ref: https://istio.io/latest/docs/reference/config/networking/virtual-service/#Headers
+    ##
+    backendHeaders: {}
+    ## @param istio.virtualService.frontendHeaders Header manipulation rules for frontend traffic
+    ## ref: https://istio.io/latest/docs/reference/config/networking/virtual-service/#Headers
+    ##
+    frontendHeaders: {}
 
 ## @section Persistence Parameters
 ##