Publish Gradle Module Metadata as configured in jackson-base (#618)

See: FasterXML/jackson-bom#33

Author: jjohannes

pom.xml

@@ -1,4 +1,9 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <!-- This module was also published with a richer model, Gradle metadata,  -->
+  <!-- which should be used instead. Do not delete the following line which  -->
+  <!-- is to indicate to Gradle or any Gradle module metadata file consumer  -->
+  <!-- that they should prefer consuming it instead. -->
+  <!-- do_not_remove: published-with-gradle-metadata -->
   <modelVersion>4.0.0</modelVersion> 
   <parent>
     <groupId>com.fasterxml.jackson</groupId>
@@ -129,6 +134,11 @@ com.fasterxml.jackson.core.*;version=${project.version}
         <groupId>org.moditect</groupId>
         <artifactId>moditect-maven-plugin</artifactId>
       </plugin>
+
+      <plugin>
+        <groupId>de.jjohannes</groupId>
+        <artifactId>gradle-module-metadata-maven-plugin</artifactId>
+      </plugin>
     </plugins>
   </build>