Adjust Jenkinsfile for move of releng.aggregator to github

Change-Id: Id259ec1c495799d4e588dc38bafd39aa52f2d965
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.debug/+/190625
Tested-by: Platform Bot <platform-bot@eclipse.org>
1 file changed