Add configuration for Kafka lag exporter

execution/infrastructure/kafka-lag-exporter/install.sh

+helm install kafka-lag-exporter https://github.com/lightbend/kafka-lag-exporter/releases/download/v0.6.0/kafka-lag-exporter-0.6.0.tgz \
+  --set clusters\[0\].name=my-confluent-cp-kafka \
+  --set clusters\[0\].bootstrapBrokers=my-confluent-cp-kafka:9092 \
+  --set pollIntervalSeconds=15 #5
+
+# Helm could also create ServiceMonitor

execution/infrastructure/kafka-lag-exporter/service-monitor.yaml

+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    app: kafka-lag-exporter
+    appScope: titan-ccp
+  name: kafka-lag-exporter
+spec:
+  selector:
+    matchLabels:
+      #app: cp-kafka
+      jobLabel: kafka-lag-exporter
+  endpoints:
+    - port: http
+      interval: 5s
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