feat(chart): support affinity for node-plugin assignment

Enables precise control over pod placement on nodes based on node labels or other affinity/anti-affinity rules. This improves workload distribution, reliability, and resource utilization in the cluster

Signed-off-by: k.borzistyy <k.borzistyy@postgrespro.ru>

Author: k.borzistyy

charts/proxmox-csi-plugin/Chart.yaml

@@ -18,7 +18,7 @@ maintainers:
     url: https://github.com/sergelogvinov
 #
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.5.0
+version: 0.5.1
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.

charts/proxmox-csi-plugin/templates/node-deployment.yaml

@@ -136,3 +136,7 @@ spec:
       tolerations:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.node.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/proxmox-csi-plugin/values.yaml

@@ -234,6 +234,10 @@ node:
       operator: Exists
       effect: NoSchedule
 
+  # -- Affinity for node-plugin assignment.
+  # ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+  affinity: {}
+
 livenessprobe:
   # -- Common livenessprobe sidecar.
   image: