[core][fix] Surrogate system data (#2185)

Author: aquamatthias

fixcore/fixcore/__main__.py

@@ -37,6 +37,7 @@
     parse_config,
     CoreConfig,
 )
+from fixcore.db import SystemData, CurrentDatabaseVersion
 from fixcore.db.db_access import DbAccess
 from fixcore.db.system_data_db import EphemeralJwtSigningKey
 from fixcore.dependencies import Dependencies, ServiceNames, TenantDependencies
@@ -128,6 +129,8 @@ def run_process(args: Namespace) -> None:
             cert_handler_no_ca = deps.add(ServiceNames.cert_handler, CertificateHandlerNoCA.lookup(config, temp))
             verify: Union[bool, str] = False if args.graphdb_no_ssl_verify else str(cert_handler_no_ca.ca_bundle)
             deps.add(ServiceNames.config, evolve(config, run=RunConfig(temp, verify)))
+            # surrogate system data for multi-tenant setup: the real one is available per tenant
+            deps.add(ServiceNames.system_data, SystemData("multi-tenant", utc(), CurrentDatabaseVersion))
             deps.add(ServiceNames.event_sender, NoEventSender())
             provider: TenantDependencyProvider = deps.add(
                 ServiceNames.tenant_dependency_provider, FromRequestTenantDependencyProvider(deps)