DRILL-7221: Exclude debug files generated by maven debug option from jar

closes #1915
diff --git a/pom.xml b/pom.xml
index 3ea8a95..68f75a2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -438,6 +438,9 @@
             <exclude>**/logging.properties</exclude>
             <exclude>**/logback.out.xml</exclude>
             <exclude>**/logback.xml</exclude>
+            <!-- Excludes files generated by maven debug option -->
+            <exclude>**/javac.sh</exclude>
+            <exclude>**/org.codehaus.plexus.compiler.javac.JavacCompiler*</exclude>
           </excludes>
           <archive>
             <index>true</index>