Merge branch '972-dns-test-fails-in-pipeline' into 'master'

Resolve "DNS test fails in pipeline due to unreliable quad9 nameserver"

Closes #972

See merge request openappstack/openappstack!538

.gitlab/issue_templates/new_app.md

@@ -40,6 +40,29 @@ Add app to following stages in `.gitlab-ci.yml`:
 * [ ] certs
 * [ ] integration-tests
 
+## Renovatebot
+
+* [ ] Make sure the needed helmRelease fields for renovatebot are in place and
+      order, i.e.
+      ```
+      # renovate: registryUrl=https://helm-charts.wikimedia.org/stable/
+      chart: eventrouter
+      version: 0.3.6
+      ```
+
+      **Note**: the order of these lines is important for renovatebot's regular expression to match them.
+
+      For adding the registryUrl automatically, you could use the
+      [renovate-helm-releases](https://github.com/k8s-at-home/renovate-helm-releases)
+      script:
+
+      ```
+      git clone https://github.com/k8s-at-home/renovate-helm-releases /tmp/renovate-helm-releases
+      /tmp/renovate.py --cluster-path flux2
+      ```
+* [ ] Make sure that latest [renovate pipeline](https://open.greenhost.net/openappstack/renovate/-/pipelines)
+      checks for app updates **after the new app is merged into the main branch**
+
 ## Documentation
 
 * Add app to:

test/pytest/test_dns.py

@@ -38,7 +38,7 @@ def test_dns(host):
         authorative_nameservers.append(ips[0].address)
 
     system_nameservers = dns.resolver.get_default_resolver()
-    external_nameservers = ['1.1.1.1', '8.8.8.8', '9.9.9.9']
+    external_nameservers = ['1.1.1.1', '8.8.8.8']
 
     results = []
     print('\nTesting authorative nameservers:')