Feature Request: Support Keycloak for User Auth

[ojtimsen]

Intro

Some environments use Keycloak as a central identity and access management (IAM) solution. Keycloak is developed by RedHat.
Keycloak Support:

• OpenID Connect
• OAuth 2.0
• SAML 2.0

Feature Request

• bring some support for Keycloak into the logic of Scriptrunner
• Auth and Group Policy from within Keycloak?
• possibly the same logging as with htpasswd and access to the ${Auth Name} variable in the script contexts
• any idea is welcome of course

[bugy]

Done, this feature is available in dev version now. Including all the listed tasks.
Documentation is here: https://www.keycloak.org/docs/latest/server_admin/#assembly-managing-clients_server_administration_guide