Ability to set lock_path

PROD-34037

Change-Id: I48a064669a226a7b1854d82135aa8304e642f2d7
diff --git a/README.rst b/README.rst
index ba17691..17d5c9f 100644
--- a/README.rst
+++ b/README.rst
@@ -19,6 +19,8 @@
       bind:
         address: 0.0.0.0
         port: 6385
+      concurrency:
+        lock_path: '/var/lib/ironic/tmp'
       database:
         engine: mysql
         host: localhost
@@ -44,6 +46,8 @@
     conductor:
       enabled: true
       version: mitaka
+      concurrency:
+        lock_path: '/var/lib/ironic/tmp'
       database:
         engine: mysql
         host: localhost