Priperly filter out aliases

Prevous attempt at filtering aliases was broken because it filtered
out an actual main parameter name and replace it with the first
available alias.

plugins/module_utils/turbo/module.py

@@ -79,8 +79,7 @@ def _keep_value(v, argument_specs, key, subkey=None):
             return True
 
     def _is_an_alias(k):
-        aliases = argument_specs[k].get("aliases")
-        return aliases and k != aliases[0]
+        return k in argument_specs[k].get("aliases", [])
 
     new_params = {}
     for k, v in params.items():

tests/unit/module_utils/test_turbo_module.py

@@ -134,4 +134,22 @@ def test_prepare_args_dedup_aliases():
         "bar": {"aliases": ["bar"], "type": int},
     }
     params = {"foo": 1, "bar": 1}
+    assert prepare_args(argspec, params) == {"ANSIBLE_MODULE_ARGS": {"foo": 1}}
+
+
+def test_prepare_args_dedup_aliases_only_value():
+    argspec = {
+        "foo": {"aliases": ["bar"], "type": int},
+        "bar": {"aliases": ["bar"], "type": int},
+    }
+    params = {"foo": 1}
+    assert prepare_args(argspec, params) == {"ANSIBLE_MODULE_ARGS": {"foo": 1}}
+
+
+def test_prepare_args_dedup_aliases_only_alias():
+    argspec = {
+        "foo": {"aliases": ["bar"], "type": int},
+        "bar": {"aliases": ["bar"], "type": int},
+    }
+    params = {"bar": 1}
     assert prepare_args(argspec, params) == {"ANSIBLE_MODULE_ARGS": {"bar": 1}}