Bug 544807: [Interoperability][SysML1.4] Migrate the tranformation to Photon, 2018-09 and 2018-12 - Manage the Papyrus plugins as requires instead of include (to avoid possible installation) Change-Id: I630f1c781c4859320485942068857a0ec98d1c87 Signed-off-by: Nicolas FAUVERGUE <nicolas.fauvergue@cea.fr>