Run gnocchi upgrade with sacks in docker template

Without this gnocchi is not initializing the sacks like puppet does
and gnocchi containers dont respond properly.

Change-Id: I2c53b00793f99420fd12ccc0b5646cf21d528e46

docker/services/gnocchi-api.yaml

@@ -39,6 +39,10 @@ parameters:
   EnableInternalTLS:
     type: boolean
     default: false
+  NumberOfStorageSacks:
+    default: 128
+    description: Number of storage sacks to create.
+    type: number
 
 conditions:
 
@@ -110,7 +114,11 @@ outputs:
                 -
                   - /var/lib/config-data/gnocchi/etc/gnocchi/:/etc/gnocchi/:ro
                   - /var/log/containers/gnocchi:/var/log/gnocchi
-            command: "/usr/bin/bootstrap_host_exec gnocchi_api su gnocchi -s /bin/bash -c '/usr/bin/gnocchi-upgrade --skip-storage'"
+            command:
+              str_replace:
+                template: "/usr/bin/bootstrap_host_exec gnocchi_api su gnocchi -s /bin/bash -c /usr/bin/gnocchi-upgrade --sacks-number=SACK_NUM"
+                params:
+                  SACK_NUM: {get_param: NumberOfStorageSacks}
         step_4:
           gnocchi_api:
             image: *gnocchi_api_image