Ability to set lock_path

PROD-34037

Change-Id: Ia37d5b70ea1c8626f170b4b7f56a76da493c927d
diff --git a/metadata/service/volume/local.yml b/metadata/service/volume/local.yml
index bece0dc..416e366 100644
--- a/metadata/service/volume/local.yml
+++ b/metadata/service/volume/local.yml
@@ -12,6 +12,8 @@
     volume:
       enabled: true
       version: ${_param:cinder_version}
+      concurrency:
+        lock_path: '/var/lock/cinder'
       osapi:
         host: ${_param:cluster_local_address}
       database: