Update codegen POM for Mars build The codegen build was taking the profile from https://hudson.eclipse.org/papyrus-rt/job/Papyrus-RT-Master-All/lastSuccessfulBuild/artifact/repository/ but that repository now contains Neon builds, which causes Mars builds to fail. Change-Id: I815a8557837f8f07d7bab60606e8cada07162678 Signed-off-by: Ernesto Posse <eposse@gmail.com>