Fixed problem with step param not initializing for 0 step migration

rhodecode/lib/db_manage.py

@@ -201,7 +201,7 @@ class DbManage(object):
                f'version {curr_version} to version {__dbversion__}')
 
         # CALL THE PROPER ORDER OF STEPS TO PERFORM FULL UPGRADE
-        _step = None
+        final_step = 'latest'
         for step in upgrade_steps:
             notify(f'performing upgrade step {step}')
             time.sleep(0.5)
@@ -210,10 +210,10 @@ class DbManage(object):
             self.sa.rollback()
             notify(f'schema upgrade for step {step} completed')
 
-            _step = step
+            final_step = step
 
         self.run_post_migration_tasks()
-        notify(f'upgrade to version {step} successful')
+        notify(f'upgrade to version {final_step} successful')
 
     def fix_repo_paths(self):
         """