Maven 3.3.1 has a new feature which lets us configure default
commandline options per project. This patch takes advantage of the new
feature so that Controller devs using the Maven 3.3.1+ no longer have
to export MAVEN_OPTS.
http://blog.soebes.de/blog/2015/03/17/apache-maven-3-dot-3-1-features/
Change-Id: Ic42840b5778bd8a421997f6e22df4a74f56210f7
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>