Update pom.xml
Update pom.xml

Update Serenity to version 1.1.31 release (Apr, 2016)
subutai-io/base,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai,subutai-io/base,subutai-io/base,subutai-io/base