software/repman: review promises for slapos.toolbox 0.123 compatibility

In b049c057 (upgrade to slapos.toolbox version 0.123, 2021-07-19), we
translated check-secure = 1 to config-http-code = 401, but check-secure = 1
also accepted responses with status code 200.

This nginx service does not have authentication and it replies with 200, so
update the promise accordingly to expect 200.

software/repman/buildout.hash.cfg

@@ -18,7 +18,7 @@ md5sum = 8a08be95a04f1a47098c4fdef80bdfed
 
 [instance-repman.cfg]
 _update_hash_filename_ = instance-repman.cfg.jinja2.in
-md5sum = b2273a47198d38f74c0bf84163b2ea1a
+md5sum = 839642d7a56447b3f08fa69729faca61
 
 [config-toml.in]
 _update_hash_filename_ = templates/config.toml.in

software/repman/instance-repman.cfg.jinja2.in

@@ -511,14 +511,12 @@ return = domain secure_access
 module = check_url_available
 name = check_repman_frontend.py
 config-url = https://${repman-frontend:connection-domain}
-config-http-code = 401
 
 [repman-backend-promise]
 <= monitor-promise-base
 module = check_url_available
 name = check_repman_backend.py
 config-url = ${nginx-parameter:backend-ssl-url}
-config-http-code = 401
 
 [template-proxysql-need-stop-start]
 recipe = slapos.recipe.template:jinja2