Add nas-metrics namespace to NetworkPolicy allowedNamespaces

Allow same-namespace (nas-metrics) access for testing/debugging.
Bump chart version to 1.1.0.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

chart/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: nfs-usage-exporter
 description: NFS PV usage metrics exporter for Prometheus
 type: application
-version: 1.0.0
+version: 1.1.0
 appVersion: "1.0.0"

chart/values.yaml

@@ -29,3 +29,4 @@ networkPolicy:
   allowedNamespaces:
     - gpulive
     - monitoring
+    - nas-metrics