[Helm] allow configuring controller container name

Signed-off-by: amirschw <24677563+amirschw@users.noreply.github.com>

charts/ingress-nginx/values.yaml

@@ -21,6 +21,9 @@ controller:
   # Use an existing PSP instead of creating one
   existingPsp: ""
 
+  # Configures the controller container name
+  containerName: controller
+
   # Configures the ports the nginx-controller listens on
   containerPort:
     http: 80