feat: add POD_NAMESPACE environment var to the snapshot controller

Author: mfhunruh

deploy/csi-snapshot-controller.yaml

@@ -56,7 +56,12 @@ spec:
           args:
             - "--v=2"
             - "--leader-election=true"
-            - "--leader-election-namespace=kube-system"
+            - "--leader-election-namespace=$(POD_NAMESPACE)"
+          env:
+            - name: POD_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.namespace
           resources:
             limits:
               memory: 300Mi