Add --tower argument to specify where tower files are persisted (#17060)

(cherry picked from commit 9ba2c53b85)

Co-authored-by: Michael Vines <mvines@gmail.com>

local-cluster/src/validator_configs.rs

@@ -37,6 +37,7 @@ pub fn safe_clone_config(config: &ValidatorConfig) -> ValidatorConfig {
         poh_verify: config.poh_verify,
         cuda: config.cuda,
         require_tower: config.require_tower,
+        tower_path: config.tower_path.clone(),
         debug_keys: config.debug_keys.clone(),
         contact_debug_interval: config.contact_debug_interval,
         contact_save_interval: config.contact_save_interval,