Adjust Jenkinsfile for move of releng.aggregator to github Change-Id: If8d00ced9ee5c00ab7f52723834e578a84ed2aa7 Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.swt.binaries/+/190639 Tested-by: Platform Bot <platform-bot@eclipse.org> Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>