redfish: fix a problem with Chassis/Power URI (#56185)

Fixes #56137 - problem with Chassis/Power URI and GetChassisPower command - assemble URI from data in Chassis resource

changelogs/fragments/56185-problem-with-redfish-chassis-power-uri.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - Redfish - Instead of building the Power URI from assumptions about URI structure, assemble from @odata.id information in the Chassis resource (https://github.com/ansible/ansible/issues/56137).

lib/ansible/module_utils/redfish_utils.py

@@ -1195,8 +1195,7 @@ class RedfishUtils(object):
             result['ret'] = True
             data = response['data']
             if key in data:
-                response = self.get_request(self.root_uri + chassis_uri +
-                                            "/" + key)
+                response = self.get_request(self.root_uri + data[key]['@odata.id'])
                 data = response['data']
                 if 'PowerControl' in data:
                     if len(data['PowerControl']) > 0: