JBTM-2630 Downgrade assembly plugin to 2.4
JBTM-2630 Downgrade assembly plugin to 2.4

jbosstm/narayana,tomjenkinson/narayana,gytis/narayana,jbosstm/narayana,mmusgrov/narayana,tomjenkinson/narayana,jbosstm/narayana,gytis/narayana,jbosstm/narayana,mmusgrov/narayana,tomjenkinson/narayana,gytis/narayana,tomjenkinson/narayana,gytis/narayana,mmusgrov/narayana,mmusgrov/narayana,gytis/narayana,gytis/narayana