Set 'Secured' property for Form authentication cookies

[sberyozkin]

Fixes #12441

@stuartwdouglas we do not set a same-site cookie in OIDC but only a Secured property, this should resolve the issue as OIDC users have never reported it.
The test does not use HTTPS (I believe it is not possible with RestAssured in Quarkus at the moment), so it just verifies that this property is disabled for non-SSL

[sberyozkin]

This is the error which is reported

Unable to find image 'mariadb:10.4' locally
docker: Error response from daemon: Get https://registry-1.docker.io/v2/library/mariadb/manifests/10.4: received unexpected HTTP status: 500 Internal Server Error.
See 'docker run --help'.
Error: Process completed with exit code 125.