Publish SI test binder jar as a maven artifact

[sobychacko]

• spring-cloud-stream module will build a new test-jar called spring-cloud-stream--test-binder.jar
• This artifact contains all the classes from the package org/springframework/cloud/stream/binder/integration/
  in test source for spring-cloud-stream

The new test artifact can be used any module in core spring-cloud-stream as below:

<dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-stream</artifactId>
       <type>test-jar</type>
       <classifier>test-binder</classifier>
</dependency>

Anywhere else outside of core spring-cloud-stream, this has to be configured as below:

<dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-stream</artifactId>
     <version>SPRING_CLOUD_STREAM_VERSION</version>
     <type>test-jar</type>
     <scope>test</scope>
     <classifier>test-binder</classifier>
 </dependency>

Here are the contents of the artifact:

META-INF/MANIFEST.MF
META-INF/
org/
org/springframework/
org/springframework/cloud/
org/springframework/cloud/stream/
org/springframework/cloud/stream/binder/
org/springframework/cloud/stream/binder/integration/
Publish SI test binder jar as a maven artifact
META-INF/maven/
META-INF/maven/org.springframework.cloud/
META-INF/maven/org.springframework.cloud/spring-cloud-stream/
org/springframework/cloud/stream/binder/integration/SpringIntegrationProvisioner$SpringIntegrationConsumerDestination.class
org/springframework/cloud/stream/binder/integration/SpringIntegrationChannelBinder$IntegrationMessageListeningContainer.class
META-INF/maven/org.springframework.cloud/spring-cloud-stream/pom.properties
org/springframework/cloud/stream/binder/integration/SpringIntegrationChannelBinder$IntegrationBinderInboundChannelAdapter.class
org/springframework/cloud/stream/binder/integration/TargetDestination.class
org/springframework/cloud/stream/binder/integration/SampleStreamApp.class
org/springframework/cloud/stream/binder/integration/SpringIntegrationChannelBinder$IntegrationBinderInboundChannelAdapter$Listener.class
org/springframework/cloud/stream/binder/integration/SampleStreamApp$PolledConsumer.class
org/springframework/cloud/stream/binder/integration/SpringIntegrationProvisioner$SpringIntegrationProducerDestination.class
org/springframework/cloud/stream/binder/integration/SpringIntegrationProvisioner.class
org/springframework/cloud/stream/binder/integration/SpringIntegrationBinderConfiguration.class
org/springframework/cloud/stream/binder/integration/SpringIntegrationChannelBinder$1.class
org/springframework/cloud/stream/binder/integration/SourceDestination.class
org/springframework/cloud/stream/binder/integration/AbstractDestination.class
META-INF/maven/org.springframework.cloud/spring-cloud-stream/pom.xml
org/springframework/cloud/stream/binder/integration/SpringIntegrationChannelBinder.class

It is worth to point out that any transitive dependencies from this artifact need to be explicitly specified by the users.

[codecov-io]

Codecov Report

Merging #1241 into master will increase coverage by 0.08%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1241      +/-   ##
============================================
+ Coverage     64.96%   65.05%   +0.08%     
- Complexity      814      817       +3     
============================================
  Files           129      129              
  Lines          3691     3691              
  Branches        531      531              
============================================
+ Hits           2398     2401       +3     
+ Misses         1020     1018       -2     
+ Partials        273      272       -1

Impacted Files	Coverage Δ	Complexity Δ
...gframework/cloud/stream/binder/DefaultBinding.java	55.55% <0%> (+11.11%)	7% <0%> (+3%)	⬆️

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