AETHER-363 standalone exporter chart

Change-Id: I33298efa5757223716a6af2e0e41a8267a80a006
diff --git a/kafka-topic-exporter/templates/_helpers.tpl b/kafka-topic-exporter/templates/_helpers.tpl
new file mode 100644
index 0000000..1237811
--- /dev/null
+++ b/kafka-topic-exporter/templates/_helpers.tpl
@@ -0,0 +1,51 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Copyright 2018-present Open Networking Foundation
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/}}
+
+{{- define "exporter.config" -}}
+---
+broker:
+  name: broker-name
+  host: {{ .Values.kpi_exporter.kpi_broker }}
+  description: The kafka broker
+  topics: {{ range .Values.kpi_exporter.topics }}
+    - {{ . }} {{ end }}
+logger:
+  loglevel: info
+  host: {{ .Values.kpi_exporter.kpi_broker }}
+target:
+  type: prometheus-target
+  name: http-server
+  port: 8080
+  description: http target for prometheus
+{{- end -}}
+
+{{/*
+Create a default fully qualified kpi-exporter name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "kpi-exporter.fullname" -}}
+{{- if .Values.kpi_exporter.fullnameOverride -}}
+{{- .Values.kpi_exporter.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default "nem-kpi-exporter" .Values.kpi_exporter.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}