Add validation/mutating webhook server for Fission custom resources (#2608)

* add webhook server
* add metrics port
* Add self-signed cert generation in helm chart for webhooks (#2611)
* remove cert-manager installation
* update fission webhook charts
* remove extra cluster role
* add mutating webhook for pkg creation
* Service name and bundle fixes (#2614)
* caBundle templating
* Rename fission.svc to fission-webhook.svc
* update package build status

Co-authored-by: shaunak_deshmukh <shaunak@infracloud.io>

charts/fission-all/templates/webhook-server/servicemonitor.yaml

@@ -0,0 +1,22 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: webhook-monitor
+  {{- if .Values.serviceMonitor.namespace }}
+  namespace: {{ .Values.serviceMonitor.namespace }}
+  {{- end }}
+  {{- with .Values.serviceMonitor.additionalServiceMonitorLabels }}
+  labels:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      svc: webhook-service
+  endpoints:
+  - targetPort: 8080
+{{- end -}}