Add example for securely connecting to Kafka - External properties file

Signed-off-by: Andrea Cosentino <ancosen@gmail.com>
diff --git a/jbang/azure-eventhubs-kafka-ibm-mq/azure.properties b/jbang/azure-eventhubs-kafka-ibm-mq/azure.properties
new file mode 100644
index 0000000..e3e4426
--- /dev/null
+++ b/jbang/azure-eventhubs-kafka-ibm-mq/azure.properties
@@ -0,0 +1,4 @@
+camel.kamelet.kafka-source.user=$ConnectionString
+camel.kamelet.kafka-source.password=<password>
+camel.kamelet.kafka-sink.user=$ConnectionString
+camel.kamelet.kafka-sink.password=<password>