Update registry1.dso.mil/ironbank/twistlock/console/console Docker tag to v21.08.520

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/twistlock/console/console	minor	21.04.439 -> 21.08.520

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chart/templates/networkpolicies/egress-twistlock-intel.yaml

+{{- if .Values.networkPolicies.enabled }}
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-egress-twistlock-intelligence
+  namespace: {{ .Release.Namespace }}
+spec:
+  podSelector: {}
+  policyTypes:
+  - Egress
+  egress:
+  - ports:
+    - port: 443
+      protocol: TCP
+{{- end }}