* stable-3.1:
Update JGit to latest revision on stable-5.6
Upgrade testcontainers to 1.13.0
ElasticContainer: Upgrade V7_6 to elasticsearch 7.6.1
Update jetty to 9.4.24.v20191120
InitContainer: Do not copy if init is run from siteWar
Change-Id: I6f6eb48e5400914747a07fca38cd190ae45a5f6a