Build against Gerrit 2.9
Build against Gerrit 2.9

Change-Id: I1ef8375b460290eccd4b8ae45264f49637d4e3ab
Signed-off-by: Edwin Kempin <b444e279ad95fdef4fbdd82c813b624595df204a@sap.com>

GerritCodeReview/plugins_project-download-commands,GerritCodeReview/plugins_project-download-commands