Add support for private gateway (#154)

This change adds support for TCPRoutes when using a private gateway
class. This is similar to annotating services today. It also moves the
gateway classes to the Helm chart as it makes things a lot simpler for
the end user as they no longer have to define them.

Signed-off-by: Philip Laine <philip.laine@gmail.com>

helm/kubernetes-operator/templates/rbac.yaml

@@ -130,6 +130,7 @@ rules:
     - gatewayclasses
     - gateways
     - httproutes
+    - tcproutes
   verbs:
     - get
     - list
@@ -141,6 +142,7 @@ rules:
     - gatewayclasses/status
     - gateways/status
     - httproutes/status
+    - tcproutes/status
   verbs:
     - update
     - patch