[JGRP-1674] Add participant list to STOP_FLUSH
[JGRP-1674] Add participant list to STOP_FLUSH

dimbleby/JGroups,rhusar/JGroups,ligzy/JGroups,pruivo/JGroups,pruivo/JGroups,TarantulaTechnology/JGroups,deepnarsay/JGroups,rpelisse/JGroups,rvansa/JGroups,ibrahimshbat/JGroups,kedzie/JGroups,slaskawi/JGroups,dimbleby/JGroups,kedzie/JGroups,ibrahimshbat/JGroups,dimbleby/JGroups,ligzy/JGroups,ibrahimshbat/JGroups,belaban/JGroups,slaskawi/JGroups,pferraro/JGroups,Sanne/JGroups,belaban/JGroups,ligzy/JGroups,vjuranek/JGroups,rpelisse/JGroups,kedzie/JGroups,TarantulaTechnology/JGroups,vjuranek/JGroups,rhusar/JGroups,danberindei/JGroups,danberindei/JGroups,rpelisse/JGroups,TarantulaTechnology/JGroups,deepnarsay/JGroups,pferraro/JGroups,Sanne/JGroups,deepnarsay/JGroups,pferraro/JGroups,belaban/JGroups,vjuranek/JGroups,rvansa/JGroups,Sanne/JGroups,danberindei/JGroups,ibrahimshbat/JGroups,rhusar/JGroups,pruivo/JGroups,slaskawi/JGroups