Install git plugin

Change-Id: Icacc479086da4d8ccde1d887e561158e21b735d5
diff --git a/jenkins/client/init.yml b/jenkins/client/init.yml
index 0b0ab07..f411c39 100644
--- a/jenkins/client/init.yml
+++ b/jenkins/client/init.yml
@@ -25,6 +25,7 @@
         docker-workflow: {}
         extended-choice-parameter: {}
         gerrit-trigger: {}
+        git: {}
         heavy-job: {}
         matrix-auth: {}
         monitoring: {}