Related to #266

Adding the description of vouch.cookie.domain for 'allowAllUsers: true' config.

This PR is only for the following 2 config examples that directly relate to the issue #266

The configuration test and results are available here on the gist

• config/config.yml_example_oidc
• config/config.yml_example

config/config.yml_example_oidc

To use allowAllUsers: true, vouch.cookie.domain is required instead of vouch.domains. The descriptions about this and actual vouch.cookie.domain config is added to the example.

config/config.yml_example

At least in the case with oidc (Okta), setting both allowAllUsers: true and vouch.domains are not allowed. For the case with allowAllUsers: true, the description of vouch.cookie.domain is added as a reminder.

There are several config examples with allowAllUsers: true that may need to be reviewed.

• config.yml_example_adfs
• config.yml_example_gitea
• config.yml_example_github
• config.yml_example_github_enterprise
• config.yml_example_homeassistant
• config.yml_example_indieauth
• config.yml_example_nextcloud

They are excluded from this PR because of some other issues (e.g. the example fails when starting vouch-proxy) and the lack of testing environment.