Add missing import

Author: gnodet

its/core-it-suite/src/test/resources/mng-3652/test-plugin/src/main/java/org/apache/maven/its/mng3652/MyMojo.java

@@ -22,6 +22,7 @@
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.List;
 import java.util.Properties;
 
 import org.apache.maven.artifact.Artifact;