Avoid MCOMPILER-485 in compiler plugin 3.10.0

Maven 3.10.0 added a feature to create missing package-info files.
The feature incorrectly uses Windows-style directory separators on
Windows.  Other parts of the code expect to always see Unix style
directory separators.

Disable the new feature so that it does not break compilation.

https://groups.google.com/g/jenkinsci-dev/c/077VYgtSLXo/m/6JQjJs7-AQAJ

pom.xml

@@ -114,6 +114,11 @@
 
     <!-- Generate metadata for reflection on method parameters -->
     <maven.compiler.parameters>true</maven.compiler.parameters>
+
+    <!-- Avoid maven compiler plugin 3.10.0 bug -->
+    <!-- https://issues.apache.org/jira/browse/MCOMPILER-485 -->
+    <!-- TODO remove when MCOMPILER-485 is fixed -->
+    <maven.compiler.createMissingPackageInfoClass>false</maven.compiler.createMissingPackageInfoClass>
   </properties>
 
   <dependencyManagement>