[system] Add resource requests and limits to etcd-defrag (#1785)

## What this PR does
Added resource requests and limits for etcd-defrag container.

### Release note

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```release-note
[system] Add resource requests and limits to etcd-defrag
```

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## Summary by CodeRabbit

* **Chores**
* Enhanced resource configurations for the etcd defragmentation process
to ensure optimal performance and system stability.

<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>

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packages/extra/etcd/templates/etcd-defrag.yaml

@@ -12,6 +12,13 @@ spec:
           containers:
           - name: etcd-defrag
             image: ghcr.io/ahrtr/etcd-defrag:v0.13.0
+            resources:
+              requests:
+                cpu: 200m
+                memory: 256Mi
+              limits:
+                cpu: 500m
+                memory: 512Mi
             args:
             - --endpoints={{ range $i, $e := until (int .Values.replicas) }}{{ if $i }},{{ end }}https://{{ $.Release.Name }}-{{ $i }}.{{ $.Release.Name }}-headless.{{ $.Release.Namespace }}.svc:2379{{ end }}
             - --cacert=/etc/etcd/pki/client/cert/ca.crt