Bug 559 change ENV to COMMONKEY

Change-Id: I6874da1e57d1ebda9a5c418b4aaea197a84196f6
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/Dockerfile.local b/Dockerfile.local
index 7cdf502..df607e6 100644
--- a/Dockerfile.local
+++ b/Dockerfile.local
@@ -67,7 +67,7 @@
 ENV OSMLCM_DATABASE_PORT   27017
 # ENV OSMLCM_DATABASE_USER  xxx
 # ENV OSMLCM_DATABASE_PASSWORD  xxx
-# ENV OSMLCM_DATABASE_MASTERPASSWORD  xxx
+# ENV OSMLCM_DATABASE_COMMONKEY  xxx
 
 #storage
 ENV OSMLCM_STORAGE_DRIVER  local