Fix mvn script

api.sh now takes an argument to specify the build tool.

Change-Id: I0ca992249701b7806f8524036bc3be59828be9bb
diff --git a/jenkins/gerrit-mvn-build-plugin.sh b/jenkins/gerrit-mvn-build-plugin.sh
index 96e4d9f..846ec57 100644
--- a/jenkins/gerrit-mvn-build-plugin.sh
+++ b/jenkins/gerrit-mvn-build-plugin.sh
@@ -9,7 +9,7 @@
 
   pushd gerrit
   buck build api
-  ./tools/maven/api.sh install
+  ./tools/maven/api.sh install buck
   popd
 fi