Voltha Alarm Management using OpenNMS and Elasticsearch
- Added necessary configuration to run a self-contained instance of
  OpenNMS
- Elasticsearch/Logstash is responsible for the interception of voltha
  alarms and to forward to OpenNMS

Amendment:
- Cleaned up untouched opennms config files
- Added Dockerfile and scripts to override the default entrypoint script

Change-Id: Id611a330f7274d016281e734ade79d22bfc0356b
diff --git a/compose/opennms/env/supervisord.conf b/compose/opennms/env/supervisord.conf
new file mode 100644
index 0000000..6ef1bfb
--- /dev/null
+++ b/compose/opennms/env/supervisord.conf
@@ -0,0 +1,6 @@
+[supervisord]
+nodaemon=true
+
+[program:opennms_start]
+command=/opennms_start.sh
+stdout_logfile=/dev/stdout