compute: Show flavor in 'server list' with API >= 2.47

Fix the issue where the flavor name was empty in server list output.
This requires somewhat invasive unit test changes to reflect the changed
API response from the server, but this has the upside of meaning we
don't need new tests since what we have validates things.
Also drop the flavor ID column as it is removed from the compute API.

Change-Id: Ica3320242a38901c1180b2b29109c9474366fde0
Signed-off-by: Khomesh Thakre <khomeshthakre24@gmail.com>
Story: 2008257
Task: 41113

Author: khomesh24

openstackclient/compute/v2/server.py

@@ -2369,21 +2369,28 @@ def take_action(self, parsed_args):
                 columns += ('image_name',)
             column_headers += ('Image',)
 
-        if parsed_args.long:
-            columns += (
-                'flavor_name',
-                'flavor_id',
-            )
-            column_headers += (
-                'Flavor Name',
-                'Flavor ID',
-            )
+        # microversion 2.47 puts the embedded flavor into the server response
+        # body but omits the id, so if not present we just expose the original
+        # flavor name in the output
+        if compute_client.api_version >= api_versions.APIVersion('2.47'):
+            columns += ('flavor_name',)
+            column_headers += ('Flavor',)
         else:
-            if parsed_args.no_name_lookup:
-                columns += ('flavor_id',)
+            if parsed_args.long:
+                columns += (
+                    'flavor_name',
+                    'flavor_id',
+                )
+                column_headers += (
+                    'Flavor Name',
+                    'Flavor ID',
+                )
             else:
-                columns += ('flavor_name',)
-            column_headers += ('Flavor',)
+                if parsed_args.no_name_lookup:
+                    columns += ('flavor_id',)
+                else:
+                    columns += ('flavor_name',)
+                column_headers += ('Flavor',)
 
         if parsed_args.long:
             columns += (
@@ -2507,18 +2514,13 @@ def take_action(self, parsed_args):
                 s.image_name = IMAGE_STRING_FOR_BFV
                 s.image_id = IMAGE_STRING_FOR_BFV
 
-            if 'id' in s.flavor:
+            if compute_client.api_version < api_versions.APIVersion('2.47'):
                 flavor = flavors.get(s.flavor['id'])
                 if flavor:
                     s.flavor_name = flavor.name
                 s.flavor_id = s.flavor['id']
             else:
-                # TODO(mriedem): Fix this for microversion >= 2.47 where the
-                # flavor is embedded in the server response without the id.
-                # We likely need to drop the Flavor ID column in that case if
-                # --long is specified.
-                s.flavor_name = ''
-                s.flavor_id = ''
+                s.flavor_name = s.flavor['original_name']
 
         table = (
             column_headers,