Add David et Sebastien among the recipients of the email about the build status for the build version construction and the version release of Silverpeas

Author: mmoqui

src/builds/silverpeas/Jenkinsfile

@@ -342,7 +342,10 @@ pipeline {
         always {
             step([$class                  : 'Mailer',
                   notifyEveryUnstableBuild: true,
-                  recipients              : "miguel.moquillon@silverpeas.org, silveryocha@chastagnier.com",
+                  recipients              :
+                          'miguel.moquillon@silverpeas.org,' +
+                          'david.lesimple@silverpeas.com,sebastien.vuillet@silverpeas.com,' +
+                          'silveryocha@chastagnier.com',
                   sendToIndividuals       : true])
         }
     }

src/releases/silverpeas/Jenkinsfile

@@ -456,7 +456,9 @@ pipeline {
                 STABLE_BRANCH to '${buildToRelease.release}.x'
                 IMAGE_FOR_STABLE to '${buildToRelease}'
                 """,
-              to: 'miguel.moquillon@silverpeas.org, silveryocha@chastagnier.com'
+              to: 'miguel.moquillon@silverpeas.org,' +
+                      'david.lesimple@silverpeas.com,sebastien.vuillet@silverpeas.com,' +
+                      'silveryocha@chastagnier.com'
           )
         }
       }