VOL-452 Integration of logstash in a swarm cluster
- Startup elasticsearch and logstash separately
- Added new targets in Makefile to build opennms and logstash images
- Default to the swarm kafka domain name

Change-Id: I1f7af5669b6bc270f3ed5c172f42d7e86933ef55
diff --git a/docker/Dockerfile.logstash b/docker/Dockerfile.logstash
new file mode 100644
index 0000000..a90ecb0
--- /dev/null
+++ b/docker/Dockerfile.logstash
@@ -0,0 +1,5 @@
+# Build from latest stable load
+FROM docker.elastic.co/logstash/logstash:5.6.0
+
+# Add logstash plugins 
+RUN logstash-plugin install logstash-output-opennms