Merge branch 'feature_2023071510_liqian_ad_abtest_config_update' into test

config.py

@@ -1342,7 +1342,7 @@ class BaseConfig(object):
             'threshold_update': {
                 'ab0': 1 / 48,
                 'ab1': 1 / 48,
-                'ab2': 1 / 48,
+                'ab2': 1 / 96,
                 'ab3': 1 / 48,
                 'ab4': 1 / 48,
                 'ab5': 1 / 48,