Make spring-cloud-stream version dynamic in docs

Author: onobc

spring-pulsar-docs/build.gradle

@@ -98,7 +98,8 @@ tasks.withType(org.asciidoctor.gradle.jvm.AbstractAsciidoctorTask) {
 	}
 	doFirst {
 		attributes "spring-pulsar-version": project.version,
-				"spring-boot-version": project(':spring-pulsar-dependencies').springBootVersion ?: 'current'
+				"spring-boot-version": project(':spring-pulsar-dependencies').springBootVersion ?: 'current',
+				"spring-cloud-stream-version": project(':spring-pulsar-dependencies').springCloudStreamVersion ?: 'current'
 	}
 }
 

spring-pulsar-docs/src/main/asciidoc/attributes.adoc

@@ -8,11 +8,12 @@
 
 :spring-pulsar-version: current
 :spring-boot-version: current
+:spring-cloud-stream-version: current
 
 :github: https://github.com/spring-projects-experimental/spring-pulsar
 :javadocs: https://docs.spring.io/spring-pulsar/docs/{spring-pulsar-version}/api
 :spring-boot-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/reference/htmlsingle
-:spring-cloud-stream-docs: https://docs.spring.io/spring-cloud-stream/docs/current/reference/html/
+:spring-cloud-stream-docs: https://docs.spring.io/spring-cloud-stream/docs/{spring-cloud-stream-version}/reference/html/
 :spring-cloud-function: https://spring.io/projects/spring-cloud-function
 
 :apache-pulsar-docs: https://pulsar.apache.org/docs/2.11.x