Issue 24 adding pull secret arg for kyverno policy

https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/kyverno/-/issues/24 adding pull secret arg for kyverno policy

chart/templates/bigbang/network-policy/egress-image-repository.yaml

+{{- if and .Values.networkPolicies.enabled .Values.registries }}
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-egress-container-registry
+  namespace: {{ .Release.Namespace }}
+  labels: {{ include "kyverno.labels" . | nindent 4 }}
+    app: kyverno
+spec:
+  egress:
+    - to:
+      - ipBlock:
+          cidr: 0.0.0.0/0
+          except:
+          - 169.254.169.254/32
+      ports: {{ toYaml .Values.registries.ports | nindent 6 }}
+  podSelector: 
+    matchLabels: {{ include "kyverno.labels" . | nindent 8 }}
+  policyTypes:
+    - Egress
+{{- end }}
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