Form based authentication cookie will soon be rejected

[rolintoucour]

Describe the bug
I register it as a bug because soon it won't work anymore.

Using the Form Based Authentication, a cookie is created, with default name "quarkus-credential". Doing so, Firefox warns:
Cookie “quarkus-credential” will be soon rejected because it has the “SameSite” attribute set to “None” or an invalid value, without the “secure” attribute. To know more about the “SameSite“ attribute, read https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite

I followed the tutorial: http://fxapps.blogspot.com/2019/12/quarkus-application-with-form.html

Expected behavior
We should be able to customize the cookie attributes, at least "SameSite" and "Secure".

Actual behavior
We can only customize the cookie name using "quarkus.http.auth.form.cookie-name".

Configuration

quarkus.http.auth.form.enabled=true
quarkus.security.jdbc.enabled=true
quarkus.security.jdbc.principal-query.datasource=auth
quarkus.security.jdbc.principal-query.sql=SELECT password FROM users u WHERE u.login=?
quarkus.security.jdbc.principal-query.bcrypt-password-mapper.enabled=true
quarkus.security.jdbc.principal-query.bcrypt-password-mapper.password-index=1
quarkus.security.jdbc.principal-query.bcrypt-password-mapper.iteration-count-index=-1
quarkus.security.jdbc.principal-query.bcrypt-password-mapper.salt-index=-1
quarkus.security.jdbc.principal-query.roles.sql=select r.name as role_name from roles r, (select m.role_id from assigned_role m join user u on m.user_id = u.id and u.login = ?) a where r.id >= a.role_id
quarkus.security.jdbc.principal-query.roles.datasource=auth
quarkus.security.jdbc.principal-query.roles.attribute-mappings.0.index=1
quarkus.security.jdbc.principal-query.roles.attribute-mappings.0.to=groups
quarkus.http.auth.permission.permit1.paths=/secured/*
quarkus.http.auth.permission.permit1.policy=authenticated

Environment (please complete the following information):

• Output of uname -a or ver: Linux netwave-lolo 5.4.0-48-generic Adjust log colors, and do not log in color if the console is not in color #52-Ubuntu SMP Thu Sep 10 10:58:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linu
• Output of java -version: openjdk version "1.8.0_252"
  OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_252-b09)
  OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.252-b09, mixed mode)
• GraalVM version (if different from Java): -
• Quarkus version or git rev: 1.8.1
• Build tool (ie. output of mvnw --version or gradlew --version): Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)

[sberyozkin]

@rolintoucour Hopefully #12450 will fix it