URL encoded passwords are getting decoded in env.py

[ramki88]

superset/superset/migrations/env.py

Line 45 in 890bf59

decoded_uri = urllib.parse.unquote(DATABASE_URI)

As suggested in psycopg/psycopg2#1546 (comment) we are using urllib.parse.quote(DB_PASSWORD) as the password contains special characters. But in the above line it gets decoded. Hence the host name is not getting resolved as part of the password is taken as host. Currently as a workaround line 45 is replaced with decoded_uri = DATABASE_URI.replace("%", "%%")