fix ui.serviceNodePort schema (#537)

UI service nodePort defaults to null, but is set as an integer

test/unit/ui-service.bats

@@ -300,3 +300,26 @@ load _helpers
       yq -r '.spec.selector["vault-active"]' | tee /dev/stderr)
   [ "${actual}" = 'true' ]
 }
+
+@test "ui/Service: default is no nodePort" {
+  cd `chart_dir`
+
+  local actual=$(helm template \
+      --show-only templates/ui-service.yaml \
+      --set 'ui.enabled=true' \
+      . | tee /dev/stderr |
+      yq -r '.spec.ports[0].nodePort' | tee /dev/stderr)
+  [ "${actual}" = "null" ]
+}
+
+@test "ui/Service: can set nodePort" {
+  cd `chart_dir`
+
+  local actual=$(helm template \
+      --show-only templates/ui-service.yaml \
+      --set 'ui.enabled=true' \
+      --set 'ui.serviceNodePort=123' \
+      . | tee /dev/stderr |
+      yq -r '.spec.ports[0].nodePort' | tee /dev/stderr)
+  [ "${actual}" = "123" ]
+}

values.schema.json

@@ -775,7 +775,10 @@
                     "type": "boolean"
                 },
                 "serviceNodePort": {
-                    "type": "null"
+                    "type": [
+                        "null",
+                        "integer"
+                    ]
                 },
                 "serviceType": {
                     "type": "string"