Split out image non-meters

As much as these will be deprecated in future, it
better to have these split out so here it is.

Closes-Bug: #1494389

Change-Id: Ic5be7726b79ad712379878b3c3581f108c65801d

ceilometer/meter/data/meters.yaml

@@ -261,7 +261,34 @@ metric:
   - name: "image"
     event_type:
       - "image.upload"
+      - "image.update"
       - "image.delete"
+    type: "gauge"
+    unit: 'image'
+    volume: 1
+    resource_id: $.payload.id
+    project_id: $.payload.owner
+
+  - name: "image.upload"
+    event_type:
+      - "image.upload"
+    type: "gauge"
+    unit: 'image'
+    volume: 1
+    resource_id: $.payload.id
+    project_id: $.payload.owner
+
+  - name: "image.delete"
+    event_type:
+      - "image.delete"
+    type: "gauge"
+    unit: 'image'
+    volume: 1
+    resource_id: $.payload.id
+    project_id: $.payload.owner
+
+  - name: "image.update"
+    event_type:
       - "image.update"
     type: "gauge"
     unit: 'image'