Adding example file to run a single instance of kafka and zookeper

Change-Id: Icad2795b182a1243f23866f4ad64994eba4b8d39
diff --git a/examples/kafka-single.yaml b/examples/kafka-single.yaml
new file mode 100644
index 0000000..31aa36c
--- /dev/null
+++ b/examples/kafka-single.yaml
@@ -0,0 +1,20 @@
+---
+# 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.
+
+# for development purposes deploy a single instance of kafka
+
+replicas: 1
+zookeeper:
+  servers: 1 # NOTE this differs from the zookeper documentation as the kafka chart is still referencing zookeper 0.5.0
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