Indeed, with this parameter, the following message was displayed in the
console:

[WARNING] ######## IMPORTANT #######
[WARNING] Usage of tycho.mode=maven is deprecated and will be removed in
later Tycho versions, see
https://github.com/eclipse-tycho/tycho/issues/676


[WARNING] ######## IMPORTANT #######

Signed-off-by: Laurent Redor <laurent.redor@obeo.fr>