Bug 570177 - [Releng] Update for 2021-03 RC1- Update maven plugin versions- Remove the jboss mecanism (not necessary anymore)- Add guava dependency plugin to paliate the API lossChange-Id: If0b5cb48172eed2e2079d38f1cc0c2a61fbaca1dSigned-off-by: Quentin Le Menez <quentin.lemenez@cea.fr>