rig major updates

rig/examples/data/k8s/base/kustomization.yaml

@@ -0,0 +1,10 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+# Beside the addons, in DATA_NAMESPACE — but no Namespace object: the addons created
+# it, and a Namespace Tilt owned would be deleted by `tilt down`, taking postgres and
+# airflow with it. rig's Tiltfile creates namespaces that are used and not declared.
+namespace: data
+
+resources:
+  - items-api.yaml