Longhorn: Upgrade from 1.6.4. to 1.7.3

Change-Id: I4e713a453a6b9e983685e2db550066fd2694609f
diff --git a/charts/longhorn/templates/network-policies/webhook-network-policy.yaml b/charts/longhorn/templates/network-policies/webhook-network-policy.yaml
index 3575763..3812e0f 100644
--- a/charts/longhorn/templates/network-policies/webhook-network-policy.yaml
+++ b/charts/longhorn/templates/network-policies/webhook-network-policy.yaml
@@ -7,7 +7,7 @@
 spec:
   podSelector:
     matchLabels:
-      app: longhorn-manager
+      longhorn.io/conversion-webhook: longhorn-conversion-webhook
   policyTypes:
   - Ingress
   ingress:
@@ -23,7 +23,7 @@
 spec:
   podSelector:
     matchLabels:
-      app: longhorn-manager
+      longhorn.io/admission-webhook: longhorn-admission-webhook
   policyTypes:
   - Ingress
   ingress: