Keycloak programatically login

[isalvadori]

Check whether is possible with keycloak to login through basic auth flow and get back the jwt token programatically

[isalvadori]

Following the documentation provided here I was able to connect programatically to the keycloak server I created and to get an AccessTokenResponse back.

[isalvadori]

We would need a mechanism in the KeycloakAuthService for:

• retrieve the token
• validate the token
• refresh the token
• logout

We would then need to:

• inject the KeycloakAuthService in the PiveauConnector components (both the javax and jakarta)
• when the Piveau component activates, the KeycloakAuthService should login
• when the Piveau component deactivates, the KeycloakAuthService should logout
• when the REQUEST_AUTH_HEADER is needed in the Peveau component, we need to get the token from the KeycloakAuthService, and, in case it expired, we would need to refresh it

[maho7791]

refresh token and validate is the same for me.

[maho7791]

I left some comments in your commit: https://github.com/de-jena/MDO/commit/ccb0861aa904031534b6b139d59bb32f6f895a1f