add possibility of redefine parameter

possibility to define parameter nodes_uri
(thats allow targeting node-config-dir)
trough salt-metadata to avoid issues, when
reclass inventory failed due incorrect node configurations
even if broken-configs does not used

related to: https://gerrit.mcp.mirantis.net/#/c/7818/3

Change-Id: I009a7434cc0372361bb2e44374534ee95aefcd19
diff --git a/metadata/service/storage/salt.yml b/metadata/service/storage/salt.yml
index a597727..7f18493 100644
--- a/metadata/service/storage/salt.yml
+++ b/metadata/service/storage/salt.yml
@@ -7,6 +7,7 @@
     storage:
       enabled: true
       base_dir: /srv/salt/reclass
+      nodes_uri:
       output: yaml
       data_source:
         engine: git