chore: fixing the stubs in the settings file for the log formatter (#2656)

this is an attempt to fix the overrides for the log formatter by putting
stubs in the settings files.

Author: deborahgu

credentials/settings/base.py

@@ -406,7 +406,8 @@
 ACE_CHANNEL_SAILTHRU_TEMPLATE_NAME = ""  # unused, but required to be set or we see an exception
 
 # Set up logging for development use (logging to stdout)
-LOGGING = get_logger_config(debug=DEBUG, dev_env=True, local_loglevel="DEBUG")
+LOGGING_FORMAT_STRING = ""
+LOGGING = get_logger_config(debug=DEBUG, dev_env=True, local_loglevel="DEBUG", format_string=LOGGING_FORMAT_STRING)
 
 # DRF Settings
 REST_FRAMEWORK = {

credentials/settings/devstack.py

@@ -8,7 +8,8 @@
 
 ALLOWED_HOSTS = ["*"]
 
-LOGGING = get_logger_config(debug=True, dev_env=True, local_loglevel="DEBUG")
+LOGGING_FORMAT_STRING = ""
+LOGGING = get_logger_config(debug=True, dev_env=True, local_loglevel="DEBUG", format_string=LOGGING_FORMAT_STRING)
 del LOGGING["handlers"]["local"]
 
 SECRET_KEY = os.environ.get("SECRET_KEY", "change-me")

credentials/settings/local.py

@@ -56,7 +56,8 @@
 USER_CACHE_TTL = 60
 
 # LOGGING
-LOGGING = get_logger_config(debug=True, dev_env=True, local_loglevel="DEBUG")
+LOGGING_FORMAT_STRING = ""
+LOGGING = get_logger_config(debug=True, dev_env=True, local_loglevel="DEBUG", format_string=LOGGING_FORMAT_STRING)
 
 #####################################################################
 # Lastly, see if the developer has any local overrides.

credentials/settings/test.py

@@ -10,7 +10,8 @@
     "credentials.apps.edx_credentials_extensions",
 ]
 
-LOGGING = get_logger_config(debug=False, dev_env=True, local_loglevel="DEBUG")
+LOGGING_FORMAT_STRING = ""
+LOGGING = get_logger_config(debug=False, dev_env=True, local_loglevel="DEBUG", format_string=LOGGING_FORMAT_STRING)
 ALLOWED_HOSTS = ["*"]
 
 DATABASES = {