packagingExcludes configuration tag can be used to exclude certain files or directories from the war file.
It is important to put '/' character at the end of the directory to be excluded. If there is no such '/' character,
then the entry is interpreted as a regular file.
<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>2.3</version> <configuration>