add README.md to rat excludes
diff --git a/brooklyn-dist/vagrant/pom.xml b/brooklyn-dist/vagrant/pom.xml
index 3fc1844..fbe6539 100644
--- a/brooklyn-dist/vagrant/pom.xml
+++ b/brooklyn-dist/vagrant/pom.xml
@@ -66,5 +66,18 @@
</executions>
</plugin>
</plugins>
+ <pluginManagement>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.rat</groupId>
+ <artifactId>apache-rat-plugin</artifactId>
+ <configuration>
+ <excludes combine.children="append">
+ <exclude>src/main/vagrant/README.md</exclude>
+ </excludes>
+ </configuration>
+ </plugin>
+ </plugins>
+ </pluginManagement>
</build>
</project>