LDAP-related fixes

Change-Id: I2aeeedae180064a66fa943b21fa3b69c89b347f7
diff --git a/gerrit/client/init.yml b/gerrit/client/init.yml
index a9bb4de..0edd17e 100644
--- a/gerrit/client/init.yml
+++ b/gerrit/client/init.yml
@@ -14,6 +14,7 @@
         host: ${_param:cluster_vip_address}
         user: admin
         email: ${_param:gerrit_admin_email}
+        auth_method: basic
         http_port: 8080
         ssh_port: 29418
         protocol: http