chore: update chart readme

chart/README.md

@@ -0,0 +1,29 @@
+# tbltp Helm Chart
+
+## Physical Infra
+
+Expecting to coexist with other infra. *For example* - you wont find the
+certificate issuers here because they live in the another chart.
+
+
+## Helm
+
+Testing:
+
+```helm upgrade --dry-run --debug --install -f chart/values.yaml -f chart/values-dev.yaml ntt-infra chart```
+
+Rollback:
+
+```helm list```
+
+```helm rollback ntt-infra```
+
+Uninstall:
+
+*BE REALLY CAREFUL THIS WILL BLOW AWAY PROD CERTS* and then letsencrypt wont issue you any more for another week.
+
+```helm uninstall ntt-infra```
+
+## Microk8s
+
+Config generated using `microk8s config  | sed "s/NATTED_IP:16443/PUBLIC_HOSTNAME:47826/g" | base64 -w0`.