Add servicemonitor additional labels and podmonitor (#2541)

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

charts/fission-all/templates/buildermgr/podmonitor.yaml

@@ -0,0 +1,23 @@
+{{- if .Values.podMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: buildermgr-monitor
+  {{- if .Values.podMonitor.namespace }}
+  namespace: {{ .Values.podMonitor.namespace }}
+  {{- end }}
+  {{- with .Values.podMonitor.additionalPodMonitorLabels }}
+  labels:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      svc: buildermgr
+  podMetricsEndpoints:
+  - port: "metrics"
+    path: "/metrics"
+{{- end -}}