johnzon is necessary during test execution, therefore must be in transitive classpaths -> scope=runtime

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1790277 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index a734f26..c4ae476 100644
--- a/pom.xml
+++ b/pom.xml
@@ -89,7 +89,10 @@
       <groupId>org.apache.johnzon</groupId>
       <artifactId>johnzon-core</artifactId>
       <version>1.0.0</version>
-      <scope>test</scope>
+      <!-- this dependency is necessary at test execution time from dependent modules 
+           and must therefore be available transitively 
+           (https://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html#Dependency_Scope) -->
+      <scope>runtime</scope> 
     </dependency>
     <!-- JSR 353 API -->
     <dependency>