temporary hack: avoid plexus-component-metadata:merge-metadata

this goal is not reproducible
see codehaus-plexus/plexus-containers#27

Author: hboutemy

maven-core/pom.xml

@@ -190,6 +190,17 @@ under the License.
       <plugin>
         <groupId>org.codehaus.plexus</groupId>
         <artifactId>plexus-component-metadata</artifactId>
+        <executions>
+          <execution>
+            <!-- plexus-component-metadata:merge-metadata disabled in favor of src/main/resources/META-INF/plexus/components.xml
+                 while waiting for a fix to https://github.com/codehaus-plexus/plexus-containers/issues/27 -->
+            <id>no-merge</id>
+            <goals>
+              <goal>generate-metadata</goal>
+              <goal>generate-test-metadata</goal>
+            </goals>
+          </execution>
+        </executions>
       </plugin>
       <plugin>
         <groupId>org.eclipse.sisu</groupId>