gerrit: enable download-commands plugin

Change-Id: I191eceff5813f09fce9b150f6a93807fce4ea95e
diff --git a/core/installer/values-tmpl/gerrit.cue b/core/installer/values-tmpl/gerrit.cue
index be8336b..cf0883f 100644
--- a/core/installer/values-tmpl/gerrit.cue
+++ b/core/installer/values-tmpl/gerrit.cue
@@ -169,6 +169,8 @@
 				pluginManagement: {
 					plugins: [{
 						name: "gitiles"
+					}, {
+						name: "download-commands"
 					}]
 					libs: []
 					cache: enabled: false
@@ -206,6 +208,13 @@
   gitBasicAuthPolicy = HTTP
   userNameToLowerCase = true
   userNameCaseInsensitive = true
+[download]
+  command = pull
+  command = cherry_pick
+  command = checkout
+  command = format_patch
+  scheme = ssh
+  scheme = http
 [httpd]
   # If using an ingress use proxy-http or proxy-https
   listenUrl = proxy-http://*:8080/