Add password for Valkey

[Alirexaa]

Description

The implementation is like #7599.

Contributes to #6155

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

[Copilot]

PR Overview

This PR adds support for specifying a password when configuring a Valkey resource and updates the related connection string generation and persistence annotation. Key changes include:

• Introducing new overloads for AddValkey to allow optional password parameters.
• Modifying the connection string assembly in ValkeyResource to include the password.
• Updating tests and documentation to validate and demonstrate the new behavior.

Reviewed Changes

File	Description
src/Aspire.Hosting.Valkey/ValkeyBuilderExtensions.cs	Added overloads and extended configuration parameters, including password handling and enhanced documentation.
src/Aspire.Hosting.Valkey/ValkeyResource.cs	Updated connection string logic to incorporate the password parameter and added a new constructor.
tests/Aspire.Hosting.Valkey.Tests/AddValkeyTests.cs	Expanded tests to verify connection string formatting and persistence annotations with and without a password.

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

src/Aspire.Hosting.Valkey/ValkeyResource.cs:59

• Ensure that PasswordParameter's string representation matches the expected placeholder format (e.g. '{myValkey-password.value}' or '{pass.value}'). If not, consider explicitly using the appropriate property from PasswordParameter.

builder.Append($",password={PasswordParameter}");

[mitchdenny]

@eerhardt can I get your input on this? It seems reasonable to me. It looks like the bitnami packages do something similar to support setting passwords on their versions of the Valkey container image.

[eerhardt]

LGTM. Thanks again @Alirexaa!