Added update_config_from_env() to override conifg values from the environment, also inculeds _load_db_passwords_from_env using this function to grab rds passwords from the environment
Added update_config_from_env() to override conifg values from the environment, also inculeds _load_db_passwords_from_env using this function to grab rds passwords from the environment

DualSpark/cloudformation-environmentbase,vladlosev/cloudformation-environmentbase,DualSpark/cloudformation-environmentbase,vladlosev/cloudformation-environmentbase