fix(argo-events): add namespace field for namespace scoped resources (#1959)

* fix(argo-events): add namespace field for namespace scoped resources
Signed-off-by: yu-croco <yu.croco@gmail.com>

* Apply suggestion from code review

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

---------

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>
Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

charts/argo-events/templates/argo-events-controller/servicemonitor.yaml

@@ -3,9 +3,7 @@ apiVersion: monitoring.coreos.com/v1
 kind: ServiceMonitor
 metadata:
   name: {{ template "argo-events.controller.fullname" . }}
-  {{- with .Values.controller.metrics.serviceMonitor.namespace }}
-  namespace: {{ . }}
-  {{- end }}
+  namespace: {{ default .Release.Namespace .Values.controller.metrics.serviceMonitor.namespace | quote }}
   labels:
     {{- include "argo-events.labels" (dict "context" . "component" .Values.controller.name "name" .Values.controller.name) | nindent 4 }}
     {{- with .Values.controller.metrics.serviceMonitor.selector }}
@@ -31,7 +29,7 @@ spec:
       {{- end }}
   namespaceSelector:
     matchNames:
-      - {{ .Release.Namespace }}
+      - {{ .Release.Namespace | quote }}
   selector:
     matchLabels:
       {{- include "argo-events.selectorLabels" (dict "context" . "component" .Values.controller.name "name" (printf "%s-metrics" .Values.controller.name)) | nindent 6 }}