added bigbang things

chart/templates/bigbang/virtualservice.yaml

+{{- if .Values.istio.enabled }}
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: nexus
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ include "nexus.name" . }}
+    helm.sh/chart: {{ include "nexus.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/part-of: nexus
+    app.kubernetes.io/component: developer-tools
+spec:
+  gateways:
+  {{- range .Values.istio.nexus.gateways }}
+    - {{ . }}
+  {{- end }}
+  hosts:
+  {{- range .Values.istio.nexus.hosts }}
+    - {{ tpl . $}}
+  {{- end }}
+  http:
+  - route:
+    - destination:
+        port:
+          number: {{ .Values.service.port }}
+          {{- if .Values.service.name }}
+          name: {{ .Values.service.name }}.{{ .Release.Namespace }}.svc
+          {{- else }}
+          name: {{ template "nexus.name" . }}-service.{{ .Release.Namespace }}.svc
+          {{- end }}
+{{- end }}
\ No newline at end of file

chart/values.yaml

 ## Overrides for generated resource names
 # namespaceOverride:
 
+
+hostname: bigbang.dev
+
+istio:
+  enabled: false
+  nexus:
+    gateways:
+    - "istio-system/main"
+    hosts:
+    - nexus.{{ .Values.hostname }}
+
 statefulset:
   enabled: false
 replicaCount: 1