linode: Allow templating token for dynamic inventory (#4040)

* linode: Allow templating token for dynamic inventory

Template the value for the access_token if it's a Jinja template.

Allows for looking up tokens from files or pulling from secrets stores like Vault.

* add Linode changelog fragment

* Fix lookup example for newer versions of Ansible

Co-authored-by: Felix Fontein <felix@fontein.de>

* Rename test case for clarity

Co-authored-by: Felix Fontein <felix@fontein.de>

Co-authored-by: Felix Fontein <felix@fontein.de>

tests/unit/plugins/inventory/test_linode.py

@@ -31,6 +31,7 @@ mandatory_py_version = pytest.mark.skipif(
 
 
 from ansible.errors import AnsibleError, AnsibleParserError
+from ansible.parsing.dataloader import DataLoader
 from ansible_collections.community.general.plugins.inventory.linode import InventoryModule
 
 
@@ -39,10 +40,11 @@ def inventory():
     return InventoryModule()
 
 
-def test_access_token_lookup(inventory):
+def test_missing_access_token_lookup(inventory):
+    loader = DataLoader()
     inventory._options = {'access_token': None}
     with pytest.raises(AnsibleError) as error_message:
-        inventory._build_client()
+        inventory._build_client(loader)
         assert 'Could not retrieve Linode access token' in error_message