Upgrading kubernetes API

Change-Id: I279db986e2dab1ebcb5b48b4195363af395c8de3
diff --git a/kafka-topic-exporter/templates/exporter-deployment.yaml b/kafka-topic-exporter/templates/exporter-deployment.yaml
index f8dc458..01eac80 100644
--- a/kafka-topic-exporter/templates/exporter-deployment.yaml
+++ b/kafka-topic-exporter/templates/exporter-deployment.yaml
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 {{- if .Values.kpi_exporter.enabled }}
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: {{ template "kpi-exporter.fullname" . }}
@@ -22,6 +22,10 @@
     release: {{ .Release.Name }}
 spec:
   replicas: {{ .Values.kpi_exporter.replicas }}
+  selector:
+    matchLabels:
+      name: {{ template "kpi-exporter.fullname" . }}
+      release: {{ .Release.Name }}
   template:
     metadata:
       labels: