Ensuring that usage of "/**/" within tests don't trigger checkstyle violation.

Example: arguments.add(Arguments.of("glob:/**/*.jar", true));
Signed-off-by: Joakim Erdfelt <joakim.erdfelt@gmail.com>

build-resources/src/main/resources/jetty-checkstyle.xml

@@ -135,7 +135,7 @@
     <!-- ensure we don't have legacy comments that confuse javadoc tooling -->
     <module name="Regexp">
       <property name="id" value="LegacyMethodSeparators"/>
-      <property name="format" value="/\*\s*[=*-]*\s*\*/"/>
+      <property name="format" value="/\*\s*[=*-]+\s*\*/" />
       <property name="illegalPattern" value="true"/>
       <property name="ignoreComments" value="false"/>
       <property name="message" value="Legacy Method Separators"/>