PLF-5094 : Make heartbeat urls different for each edition

Fix description:
	- Make pingback url different for each edition
PLF-5496: Update eXo Dependencies for releasing PLF 4.0.3
[maven-release-plugin] prepare release 4.0.3
[maven-release-plugin] prepare for next development iteration
PLF-5496: Update eXo Depedencies for PLF 4.0.4
Merge commit 'f4ef016291d2b4f0e30d98144d765aca199144bf' into HEAD