Refactor code for consistency and readability

- Standardized string quotes across multiple files to use double quotes for consistency.
- Improved formatting of JSON dumps in mock data for better readability.
- Enhanced the structure of various functions and data definitions for clarity.
- Updated test cases to reflect changes in data structure and ensure accuracy.

dashboard/openstack_utils/flavor.py

@@ -1,10 +1,11 @@
+from collections import Counter
+
 from openstack.connection import Connection
 
-from collections import Counter
 
 def get_flavor_list(connection: Connection) -> dict:
     servers = list(connection.compute.servers(all_projects=True))
-    flavor_ids = [s.flavor['id'] for s in servers if 'id' in s.flavor]
+    flavor_ids = [s.flavor["id"] for s in servers if "id" in s.flavor]
     flavor_count = Counter(flavor_ids).most_common()
 
     flavors = list(flavor_count)
@@ -13,10 +14,7 @@ def get_flavor_list(connection: Connection) -> dict:
     placeholder = {"name": "—", "count": 0}
     for idx, prefix in [(0, "first"), (1, "second"), (2, "third")]:
         if len(flavors) > idx:
-            result[f"{prefix}_common_flavor"] = {
-                "name": flavors[idx][0],
-                "count": flavors[idx][1]
-            }
+            result[f"{prefix}_common_flavor"] = {"name": flavors[idx][0], "count": flavors[idx][1]}
         else:
             result[f"{prefix}_common_flavor"] = placeholder