BZ-1105174: use singleton and startup ejb beans for executors instead of stateless to avoid cdi issues on WebSphere
[BZ-1100187] avoid to prevent the kproject compilation when a class cannot be loaded
[BZ-1099393] report only a warning for all LinkageErrors
BZ1112062 - mvn deploy to workbench artifact repository
(cherry picked from commit e156d3968f9c431f662e625c6a337c069a8eb138)