salt: exclude PrometheusRule cleanup under certain conditions

The Metalk8s python-kubernetes module list_objects method
is bugged for already released versions.

The module has been patched in this PR: #2592
but since we require the list_objects methods to cleanup old
PrometheusRule, we need to find a way to skip cleanup for
already released versions.

Closes: #2606

buildchain/buildchain/salt_tree.py

@@ -220,6 +220,8 @@ def _get_parts(self) -> Iterator[str]:
     Path('salt/metalk8s/addons/prometheus-adapter/deployed/init.sls'),
 
     Path('salt/metalk8s/addons/prometheus-operator/post-cleanup.sls'),
+    Path('salt/metalk8s/addons/prometheus-operator/post-downgrade.sls'),
+    Path('salt/metalk8s/addons/prometheus-operator/post-upgrade.sls'),
     Path('salt/metalk8s/addons/prometheus-operator/deployed/chart.sls'),
     Path('salt/metalk8s/addons/prometheus-operator/deployed/cleanup.sls'),
     Path('salt/metalk8s/addons/prometheus-operator/deployed/dashboards.sls'),

salt/metalk8s/addons/prometheus-operator/post-downgrade.sls

@@ -0,0 +1,23 @@
+# Include here all states that should be called after downgrading
+
+{%- set version = pillar.metalk8s.cluster_version %}
+
+{#- The Metalk8s python-kubernetes module for listing objects is bugged for
+    already released versions, The following release versions are affected:
+    2.4.0, 2.4.1, 2.4.2, 2.4.3 and 2.5.0
+    This issue as reported here:
+    https://github.com/scality/metalk8s/issues/2592 has been fixed. We need to
+    skip the PrometheusRule cleanup state for the versions mentioned above. #}
+
+{%- set affected_versions = ['2.4.0', '2.4.1', '2.4.2', '2.4.3', '2.5.0'] %}
+
+{%- if version not in affected_versions %}
+include:
+  - .post-cleanup
+
+{%- else %}
+
+Skipping PrometheusRule cleanup for affected version {{ version }}:
+  test.succeed_without_changes: []
+
+{%- endif %}

salt/metalk8s/addons/prometheus-operator/post-upgrade.sls

@@ -0,0 +1,4 @@
+# Include here all states that should be called after upgrading
+
+include:
+  - .post-cleanup

salt/metalk8s/orchestrate/downgrade/post.sls

@@ -1,4 +1,4 @@
 # Include here all states that should be called after downgrading
 
 include:
-  - metalk8s.addons.prometheus-operator.post-cleanup
+  - metalk8s.addons.prometheus-operator.post-downgrade

salt/metalk8s/orchestrate/upgrade/post.sls

@@ -1,4 +1,4 @@
 # Include here all states that should be called after upgrading
 
 include:
-  - metalk8s.addons.prometheus-operator.post-cleanup
+  - metalk8s.addons.prometheus-operator.post-upgrade