manifest: disable Zincati and pinger on testing-devel

By default, we don't enable Zincati and pinger on testing-devel. See
discussions in:

coreos/fedora-coreos-tracker#163

manifest.yaml

@@ -8,3 +8,13 @@ repos:
 
 add-commit-metadata:
   fedora-coreos.stream: testing-devel
+
+postprocess:
+  # Disable Zincati and fedora-coreos-pinger on non-production streams
+  # https://github.com/coreos/fedora-coreos-tracker/issues/163
+  - |
+    #!/usr/bin/env bash
+    set -xeuo pipefail
+    mkdir -p /etc/fedora-coreos-pinger/config.d /etc/zincati/config.d
+    echo -e '# https://github.com/coreos/fedora-coreos-tracker/issues/163\nreporting.enabled = false' > /etc/fedora-coreos-pinger/config.d/90-disable-on-non-production-stream.toml
+    echo -e '# https://github.com/coreos/fedora-coreos-tracker/issues/163\nupdates.enabled = false' > /etc/zincati/config.d/90-disable-on-non-production-stream.toml