[checkstyle] do not limit the FileLength of CoreOptions.java

Author: LsomeYeah

tools/maven/suppressions.xml

@@ -25,6 +25,8 @@ under the License.
 <suppressions>
 		<suppress files="DataTypes.java" checks="MethodNameCheck"/>
 
+		<suppress files="CoreOptions.java" checks="FileLength"/>
+
 		<!-- target directory is not relevant for checkstyle -->
 		<suppress
 			files="[\\/]target[\\/]"