Update Keycloak admin variable names in extensions

[paulomorgado]

Description

Renamed constants for Keycloak admin username and password in the KeycloakResourceBuilderExtensions class from KEYCLOAK_ADMIN and KEYCLOAK_ADMIN_PASSWORD to KC_BOOTSTRAP_ADMIN_USERNAME and KC_BOOTSTRAP_ADMIN_PASSWORD. This change aligns with https://www.keycloak.org/docs/26.0.0/upgrading/#admin-bootstrapping-and-recovery.

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No
• Does the change require an update in our Aspire docs?
  • Yes
    • Is this introducing a breaking change?
      • Yes
        • Link to aspire-docs issue (please use this breaking-change template):
      • No
        • Link to aspire-docs issue (please use this doc-idea template):
  • No

[davidfowl]

So keycloak is broken today?

[paulomorgado]

So keycloak is broken today?

Not yet! But I don't know when it will be,

[davidfowl]

I think you need to update some tests

[paulomorgado]

@davidfowl, fixed the tests, but I don't understand why it's failing for Linux.

[DamianEdwards]

Change seems fine.

[DamianEdwards]

/azp run

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Azure Pipelines successfully started running 1 pipeline(s).

[davidfowl]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[DamianEdwards]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[davidfowl]

This change is good, the redis test is flaky (it shouldn't block this PR).