Doc changes related to Rabbit's 'GH-193 Added note on default properties'

docs/src/main/asciidoc/overview.adoc

@@ -142,6 +142,9 @@ Default: none.
 [[kafka-consumer-properties]]
 ==== Kafka Consumer Properties
 
+NOTE: To avoid repetition, Spring Cloud Stream supports setting values for all channels, in the format of `spring.cloud.stream.default.<property>=<value>`.
+
+
 The following properties are available for Kafka consumers only and
 must be prefixed with `spring.cloud.stream.kafka.bindings.<channelName>.consumer.`.
 
@@ -264,6 +267,9 @@ Default: none (the binder-wide default of 1 is used).
 [[kafka-producer-properties]]
 ==== Kafka Producer Properties
 
+NOTE: To avoid repetition, Spring Cloud Stream supports setting values for all channels, in the format of `spring.cloud.stream.default.<property>=<value>`.
+
+
 The following properties are available for Kafka producers only and
 must be prefixed with `spring.cloud.stream.kafka.bindings.<channelName>.producer.`.
 

spring-cloud-stream-binder-kafka-core/src/test/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaBinderConfigurationPropertiesTest.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *      https://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,