Use fixed device_ids for login

This will cut down on throwaway devices being generated.

Author: ulope

build/purger/purger.py

@@ -83,7 +83,9 @@ def purge(
 
     api = GMatrixHttpApi(server)
     try:
-        response = api.login("m.login.password", user=username, password=password)
+        response = api.login(
+            "m.login.password", user=username, password=password, device_id="purger"
+        )
         api.token = response["access_token"]
     except (MatrixError, KeyError) as ex:
         click.secho(f"Could not log in to server {server}: {ex}")

build/room_ensurer/room_ensurer.py

@@ -338,7 +338,9 @@ def _connect(self, server_name: str, server_url: str) -> Tuple[str, GMatrixHttpA
             username = str(to_normalized_address(signer.address))
             password = encode_hex(signer.sign(server_name.encode()))
 
-        response = api.login("m.login.password", user=username, password=password)
+        response = api.login(
+            "m.login.password", user=username, password=password, device_id="room_ensurer"
+        )
         api.token = response["access_token"]
         log.debug("Connected", server=server_name)
         return server_name, api