[FIXED JENKINS-9248] Add configuration info in remote API for matrix builds

core/src/main/java/hudson/matrix/MatrixBuild.java

@@ -51,6 +51,7 @@ import java.util.List;
 
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;
+import org.kohsuke.stapler.export.Exported;
 
 /**
  * Build of {@link MatrixProject}.
@@ -126,6 +127,7 @@ public class MatrixBuild extends AbstractBuild<MatrixProject,MatrixBuild> {
     /**
      * Returns all {@link MatrixRun}s for this {@link MatrixBuild}.
      */
+    @Exported
     public List<MatrixRun> getRuns() {
         List<MatrixRun> r = new ArrayList<MatrixRun>();
         for(MatrixConfiguration c : getParent().getItems()) {