Fix crun installation issue by clearing the dnf cache (#573)

# Summary

- fixed dnf and yum warnings by disabling dnf `subscription-manager`
plugin
- clean dnf cache actually solves the issue
- also updated the requests and limits for `e2e_replica_set` test
because it was flaky

## Proof of Work

Passing staging `ibm_power` tests ->
https://spruce.mongodb.com/version/690cbc9b1d6ff600074edce6

## Checklist

- [ ] Have you linked a jira ticket and/or is the ticket in the title?
- [ ] Have you checked whether your jira ticket required DOCSP changes?
- [x] Have you added changelog file?
    - use `skip-changelog` label if not needed
- refer to [Changelog files and Release
Notes](https://github.com/mongodb/mongodb-kubernetes/blob/master/CONTRIBUTING.md#changelog-files-and-release-notes)
section in CONTRIBUTING.md for more details

Author: MaciejKaras

docker/mongodb-kubernetes-tests/tests/replicaset/replica_set.py

@@ -59,9 +59,9 @@ def replica_set(namespace: str, custom_mdb_version: str, cluster_domain: str) ->
                             "resources": {
                                 "limits": {
                                     "cpu": "1",
-                                    "memory": "1Gi",
+                                    "memory": "2Gi",
                                 },
-                                "requests": {"cpu": "0.2", "memory": "300M"},
+                                "requests": {"cpu": "0.5", "memory": "1Gi"},
                             },
                         }
                     ]
@@ -78,9 +78,9 @@ def replica_set(namespace: str, custom_mdb_version: str, cluster_domain: str) ->
                             "resources": {
                                 "limits": {
                                     "cpu": "1",
-                                    "memory": "1Gi",
+                                    "memory": "2Gi",
                                 },
-                                "requests": {"cpu": "0.2", "memory": "300M"},
+                                "requests": {"cpu": "0.5", "memory": "1Gi"},
                             },
                         }
                     ]
@@ -188,9 +188,9 @@ def test_pods_resources(self):
             pod = self.corev1.read_namespaced_pod(podname, self.namespace)
             c0 = pod.spec.containers[0]
             assert c0.resources.limits["cpu"] == "1"
-            assert c0.resources.limits["memory"] == "1Gi"
-            assert c0.resources.requests["cpu"] == "200m"
-            assert c0.resources.requests["memory"] == "300M"
+            assert c0.resources.limits["memory"] == "2Gi"
+            assert c0.resources.requests["cpu"] == "500m"
+            assert c0.resources.requests["memory"] == "1Gi"
 
     def test_pods_container_envvars(self):
         for pod_name in self._get_pods("my-replica-set-{}", 3):

scripts/dev/setup_ibm_container_runtime.sh

@@ -2,8 +2,14 @@
 
 set -Eeou pipefail
 
+echo "Cleaning DNF cache..."
+sudo dnf clean all && sudo rm -r /var/cache/dnf
+
 echo "Installing/upgrading crun..."
-sudo dnf upgrade -y crun || sudo dnf install -y crun || sudo yum upgrade -y crun || sudo yum install -y crun
+sudo dnf upgrade -y crun --disableplugin=subscription-manager || \
+sudo dnf install -y crun --disableplugin=subscription-manager || \
+sudo yum upgrade -y crun --disableplugin=subscription-manager || \
+sudo yum install -y crun --disableplugin=subscription-manager
 
 if ! crun --version &>/dev/null; then
   echo "❌ crun installation failed"