add a configuration for cookieOptions

[peterwillis]

Description

options.cookieOptions can either be a function or an object, the result is passed to res.cookie as the options argument.

Please advise the tests I should include, because I don't see any testing the existing configuration options for anything other than the ldap provider. I am happy to add something similar for the local login provider if somebody could help me with a minimal configuration and guidance of what other tests to add.

Checklist

• [ ] New tests added or existing tests modified to cover all changes
• [x] Code conforms with the style guide

[slnode]

Can one of the admins verify this patch? To accept patch and trigger a build add comment ".ok\W+to\W+test."

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been closed due to continued inactivity. Thank you for your understanding. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository.