Adds Logistration MFE url for forgot password email.

This patch would enable routing learner to logistration MFE
via forgot password url than on platform when
ENABLE_LOGISTRATION_MICROFRONTEND feature flag is set.

VAN-98

lms/envs/devstack.py

@@ -332,6 +332,7 @@ EDXNOTES_CLIENT_NAME = 'edx_notes_api-backend-service'
 LEARNING_MICROFRONTEND_URL = 'http://localhost:2000'
 ACCOUNT_MICROFRONTEND_URL = 'http://localhost:1997'
 LOGISTRATION_MICROFRONTEND_URL = 'http://localhost:1999'
+LOGISTRATION_MICROFRONTEND_DOMAIN = 'localhost:1999'
 
 ############## Docker based devstack settings #######################