XOS/NEM charts, use a global registry var, split docker image name/tag/pullPolicy

Change-Id: I7f3457882830de050d1357254fc5483faf91d03f
diff --git a/xos-services/exampleservice/templates/_helpers.tpl b/xos-services/exampleservice/templates/_helpers.tpl
index 7caad77..c33f782 100644
--- a/xos-services/exampleservice/templates/_helpers.tpl
+++ b/xos-services/exampleservice/templates/_helpers.tpl
@@ -58,11 +58,17 @@
       filename: /var/log/xos.log
       maxBytes: 10485760
       backupCount: 5
+    kafka:
+      class: kafkaloghandler.kafkaloghandler.KafkaLogHandler
+      bootstrap_servers:
+        - "cord-kafka:9092"
+      topic: xos.log.exampleservice
   loggers:
     'multistructlog':
       handlers:
         - console
         - file
+        - kafka
       level: DEBUG
 proxy_ssh:
   enabled: {{ .Values.global.proxySshEnabled }}