feat: Adding function to lookup CIDR value for api-egress policy

Fixing issue found in testing. When non 0.0.0.0/0 CIDR is specified, Kubernetes states that except block beneath must be within specified CIDR range.

Also bumped chart version and CHANGELOG.

chart/templates/bigbang/networkpolicies/allow-egress-api.yaml

@@ -10,9 +10,11 @@ spec:
   - to:
     - ipBlock:
         cidr: {{ .Values.networkPolicies.controlPlaneCidr }}
+        {{- if eq .Values.networkPolicies.controlPlaneCidr "0.0.0.0/0" }}
         # ONLY Block requests to cloud metadata IP
         except:
         - 169.254.169.254/32
+        {{- end }}
   policyTypes:
   - Egress
 {{- end }}