move HOSTNAME_MODULESTORE_DEFAULT_MAPPING to lms.envs.aws (not lms.envs.cms.aws)

lms/envs/aws.py

@@ -251,6 +251,8 @@ SSL_AUTH_EMAIL_DOMAIN = ENV_TOKENS.get("SSL_AUTH_EMAIL_DOMAIN", "MIT.EDU")
 SSL_AUTH_DN_FORMAT_STRING = ENV_TOKENS.get("SSL_AUTH_DN_FORMAT_STRING",
                                            "/C=US/ST=Massachusetts/O=Massachusetts Institute of Technology/OU=Client CA v1/CN={0}/emailAddress={1}")
 
+HOSTNAME_MODULESTORE_DEFAULT_MAPPINGS = ENV_TOKENS.get('HOSTNAME_MODULESTORE_DEFAULT_MAPPINGS',{})
+
 ############################## SECURE AUTH ITEMS ###############
 # Secret things: passwords, access keys, etc.
 

lms/envs/cms/aws.py

@@ -12,5 +12,3 @@ with open(ENV_ROOT / "cms.auth.json") as auth_file:
     CMS_AUTH_TOKENS = json.load(auth_file)
 
 MODULESTORE = CMS_AUTH_TOKENS['MODULESTORE']
-
-HOSTNAME_MODULESTORE_DEFAULT_MAPPINGS = ENVS_TOKENS.get('HOSTNAME_MODULESTORE_DEFAULT_MAPPINGS',{})