Forces a module to a given schema version.
This function is rarely necessary.
string $module: Name of the module.
string $schema_version: The schema version the module should be set to.
function update_set_schema($module, $schema_version) {
Drupal::keyValue('system.schema')
->set($module, $schema_version);
// system_list_reset() is in module.inc but that would only be available
// once the variable bootstrap is done.
require_once __DIR__ . '/module.inc';
system_list_reset();
}