Ensure deterministic ordering of web health expectations and add unit tests

This update sorts all expectation keys alphabetically to guarantee idempotent
Ansible deployments and stable systemd unit generation. Added two unit tests to
validate proper key ordering for canonical domains, aliases, redirects, and WWW
mappings.

Reference: https://chatgpt.com/share/692ae99b-dd88-800f-8fad-2ff62666e295

tests/unit/roles/sys-ctl-hlth-webserver/filter_plugins/test_web_health_expectations.py

@@ -397,5 +397,30 @@ class TestWebHealthExpectationsFilter(unittest.TestCase):
         self.assertEqual(out["v1.l11.example.org"], [301, 307])    # per-key list
         self.assertEqual(out["v2.l11.example.org"], [301, 307])
 
+    def test_expectations_keys_are_sorted_alphabetically (self ):
+        apps ={"app-sort":{}}
+        self ._configure_returns ({
+        ("app-sort","server.domains.canonical"):["b.example.org","a.example.org","c.example.org"],
+        ("app-sort","server.domains.aliases"):["alias.example.org"],
+        ("app-sort","server.status_codes"):{"default":200 },
+        })
+        out =self .mod .web_health_expectations (apps ,group_names =["app-sort"])
+
+        keys =list (out .keys ())
+        self .assertEqual (keys ,sorted (keys ))
+
+
+    def test_expectations_keys_sorted_with_redirects_and_www (self ):
+        apps ={}
+        out =self .mod .web_health_expectations (
+        apps ,
+        group_names =["dummy-app"],
+        www_enabled =True ,
+        redirect_maps =[{"source":"redir-b.example.org"},{"source":"redir-a.example.org"}],
+        )
+
+        keys =list (out .keys ())
+        self .assertEqual (keys ,sorted (keys ))
+
 if __name__ == "__main__":
     unittest.main()