[SEBA-232]

Publish XOS internal events on kafka as well as redis

Switch to confluent_kafka, create XOSKafkaProducer wrapper lib

Remove nonfunctional test for connection failure

Change-Id: I4d3057fcc0b5b56022ef3f853dbe0323ef071af7
diff --git a/lib/xos-config/xosconfig/xos-config-schema.yaml b/lib/xos-config/xosconfig/xos-config-schema.yaml
index d897e76..0705630 100644
--- a/lib/xos-config/xosconfig/xos-config-schema.yaml
+++ b/lib/xos-config/xosconfig/xos-config-schema.yaml
@@ -40,3 +40,7 @@
     type: any
   xos_dir:
     type: str
+  kafka_bootstrap_servers:
+    type: seq
+    sequence:
+      - type: str