Fix edge case with numerical namespace strings

Author: consideRatio

jupyterhub/templates/httproute.yaml

@@ -14,7 +14,7 @@ spec:
     - kind: Gateway
       name: {{ .Values.httpRoute.gateway.name }}
       {{- with .Values.httpRoute.gateway.namespace }}
-      namespace: {{ . }}
+      namespace: "{{ . }}"
       {{- end }}
   {{- with .Values.httpRoute.hostnames }}
   hostnames:

jupyterhub/values.yaml

@@ -720,7 +720,7 @@ httpRoute:
   hostnames: []
   gateway:
     name: your-gateway
-    # namespace: if different from Z2JH
+    namespace: "" # required for a gateway resource in another namespace
 
 # cull relates to the jupyterhub-idle-culler service, responsible for evicting
 # inactive singleuser pods.