retire shade in favor of openstacksdk for openstack modules (#40532)

* Establish connection through openstacksdk
* Switch from shade to openstacksdk
* fix typo in link to openstacksdk
* remove nova_client usage
* further remove of min_version from openstack modules

lib/ansible/modules/cloud/openstack/os_floating_ip.py

@@ -78,7 +78,7 @@ options:
    availability_zone:
      description:
        - Ignored. Present for backwards compatibility
-requirements: ["shade"]
+requirements: ["openstacksdk"]
 '''
 
 EXAMPLES = '''
@@ -152,11 +152,6 @@ def main():
     module_kwargs = openstack_module_kwargs()
     module = AnsibleModule(argument_spec, **module_kwargs)
 
-    if module.params['nat_destination']:
-        min_version = '1.8.0'
-    else:
-        min_version = None
-
     server_name_or_id = module.params['server']
     state = module.params['state']
     network = module.params['network']
@@ -168,9 +163,9 @@ def main():
     timeout = module.params['timeout']
     purge = module.params['purge']
 
-    shade, cloud = openstack_cloud_from_module(module, min_version=min_version)
-
+    sdk, cloud = openstack_cloud_from_module(module)
     try:
+
         server = cloud.get_server(server_name_or_id)
         if server is None:
             module.fail_json(
@@ -251,7 +246,7 @@ def main():
                 module.exit_json(changed=True)
             module.exit_json(changed=changed, floating_ip=f_ip)
 
-    except shade.OpenStackCloudException as e:
+    except sdk.exceptions.OpenStackCloudException as e:
         module.fail_json(msg=str(e), extra_data=e.extra_data)