Update issue templates (zalando#1051)

* Update issue templates

To help us helping them

* update the template

* some updates

* or not on

.github/ISSUE_TEMPLATE/postgres-operator-issue-template.md

@@ -0,0 +1,19 @@
+---
+name: Postgres Operator issue template
+about: How are you using the operator?
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Please, answer some short questions which should help us to understand your problem / question better?
+
+- **Which image of the operator are you using?** e.g. registry.opensource.zalan.do/acid/postgres-operator:v1.5.0
+- **Where do you run it - cloud or metal? Kubernetes or OpenShift?** [AWS K8s | GCP ... | Bare Metal K8s]
+- **Are you running Postgres Operator in production?** [yes | no]
+- **Type of issue?** [Bug report, question, feature request, etc.]
+
+Some general remarks when posting a bug report:
+- Please, check the operator, pod (Patroni) and postgresql logs first. When copy-pasting many log lines please do it in a separate GitHub gist together with your Postgres CRD and configuration manifest.
+- If you feel this issue might be more related to the [Spilo](https://github.com/zalando/spilo/issues) docker image or [Patroni](https://github.com/zalando/patroni/issues), consider opening issues in the respective repos.