Fix warning about unspecified javadoc plugin version
Fix warning about unspecified javadoc plugin version

Change-Id: If8656f5858e4ae8382e23ae3a3d3c805c959b6c5
Signed-off-by: Robert Varga <b8bd3df785fdc0ff42dd1710c5d91998513c57ef@cisco.com>

bigdataops/bgpcep,opendaylight/bgpcep,inocybe/odl-bgpcep,bigdataops/bgpcep,inocybe/odl-bgpcep