views: fix image restore cache checks

Fix the scope of the has_cache variable to reset the value for
each client.
Check the partition type based on the PART_TYPE_CODES string version
instead of the numerical value of the partition type.

ogcp/views.py

@@ -837,7 +837,6 @@ def action_image_restore():
         for image in images[repo_id]:
             form.image.choices.append((image['id'], image['name']))
 
-        has_cache = False
         part_choices = []
         for ip in ips:
             r = server.get('/client/setup', payload={'client': [ip]})
@@ -846,6 +845,8 @@ def action_image_restore():
             if r.status_code != requests.codes.ok:
                 return ogserver_error('commands')
 
+            has_cache = False
+
             partitions = r.json()['partitions']
             parts = []
             for partition in partitions:
@@ -854,7 +855,7 @@ def action_image_restore():
                 if part_id == 0:  # This is the disk data, not a partition.
                     continue
                 part_code = partition['code']
-                if part_code == 'CACHE':
+                if PART_TYPE_CODES.get(int(part_code), 'UNKNOWN') == 'CACHE':
                     has_cache = True
                 filesystem = partition['filesystem']
                 part_size = partition['size']