Load /password_policy endpoint on workers

changelog.d/15331.feature

@@ -0,0 +1 @@
+Allow loading `/password_policy` endpoint on workers.

docker/configure_workers_and_start.py

@@ -172,6 +172,7 @@
             "^/_matrix/client/v1/rooms/.*/timestamp_to_event$",
             "^/_matrix/client/(api/v1|r0|v3|unstable)/search",
             "^/_matrix/client/(r0|v3|unstable)/user/.*/filter(/|$)",
+            "^/_matrix/client/(r0|v3|unstable)/password_policy$",
         ],
         "shared_extra_conf": {},
         "worker_extra_conf": "",

docs/workers.md

@@ -247,6 +247,7 @@ information.
     ^/_matrix/client/(r0|v3|unstable)/register$
     ^/_matrix/client/(r0|v3|unstable)/register/available$
     ^/_matrix/client/v1/register/m.login.registration_token/validity$
+    ^/_matrix/client/(r0|v3|unstable)/password_policy$
 
     # Event sending requests
     ^/_matrix/client/(api/v1|r0|v3|unstable)/rooms/.*/redact

synapse/rest/__init__.py

@@ -138,8 +138,7 @@ def register_servlets(client_resource: HttpServer, hs: "HomeServer") -> None:
             capabilities.register_servlets(hs, client_resource)
             account_validity.register_servlets(hs, client_resource)
         relations.register_servlets(hs, client_resource)
-        if is_main_process:
-            password_policy.register_servlets(hs, client_resource)
+        password_policy.register_servlets(hs, client_resource)
         knock.register_servlets(hs, client_resource)
         appservice_ping.register_servlets(hs, client_resource)
 

synapse/rest/client/password_policy.py

@@ -31,6 +31,7 @@
 
 class PasswordPolicyServlet(RestServlet):
     PATTERNS = client_patterns("/password_policy$")
+    CATEGORY = "Registration/login requests"
 
     def __init__(self, hs: "HomeServer"):
         super().__init__()