[gnocchi] Don't recursively modify file perms on start

For deployments with a lot of Gnocchi data, this is a non-starter
(literally... the service basically can't start.) There maybe needs to
be a way to configure this, or only do it during deploy/bootstrap?
Unclear, but disabling for now; users can `chown -R gnocchi:gnocchi`
themselves in the meantime if need be.

Change-Id: I0bae6dfbbee9f63506c89bd6b392e7be07fd5930

ansible/roles/gnocchi/templates/gnocchi-api.json.j2

@@ -38,8 +38,7 @@
     "permissions": [
         {
             "path": "/var/lib/gnocchi",
-            "owner": "gnocchi:gnocchi",
-            "recurse": true
+            "owner": "gnocchi:gnocchi"
         },
         {
             "path": "/var/log/kolla/gnocchi",

ansible/roles/gnocchi/templates/gnocchi-metricd.json.j2

@@ -29,8 +29,7 @@
     "permissions": [
         {
             "path": "/var/lib/gnocchi",
-            "owner": "gnocchi:gnocchi",
-            "recurse": true
+            "owner": "gnocchi:gnocchi"
         },
         {
             "path": "/var/log/kolla/gnocchi",

ansible/roles/gnocchi/templates/gnocchi-statsd.json.j2

@@ -29,8 +29,7 @@
     "permissions": [
         {
             "path": "/var/lib/gnocchi",
-            "owner": "gnocchi:gnocchi",
-            "recurse": true
+            "owner": "gnocchi:gnocchi"
         },
         {
             "path": "/var/log/kolla/gnocchi",