Setting additional cookie options (httponly, secure and domain)

Problem/Motivation

Currently, it is not possible to set additional options to drupalauth4ssp cookie (httponly, secure and domain).

Proposed resolution

The proposed solution is to get the options set in simplesamlphp config.php file.
Another solution would be getting the options from session_get_cookie_params(), but since we are dealing with saml cookies, maybe it is better to retrieve the configuration from simplesamlphp library. as the proposed solution says.

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A