SURE-6723

Is your feature request related to a problem? Please describe.

Request description:

Goal: allow Rancher users to specify additional arbitrary values for the Fleet chart, so that their Fleet installation can be customized flexibly.

This is particularly useful as a catch-all measure when assisting customers to introduce Fleet-specific experimental tuning settings, debug settings, etc. even if they are not yet covered by the Rancher UI.

Actual behavior:

Currently Rancher installs the Fleet with fixed values, making the solution less flexible than Fleet standalone cases.

Expected behavior:

Parameters can be customized - feature parity with Fleet standalone.

Workaround:

Manually editing Fleet deployments, ConfigMaps, etc.

Additional notes:

Currently Rancher installs the Fleet with fixed values. Code reference:

https://github.com/rancher/rancher/blob/9c5a25675676b680898f933681abde88f53dba95/pkg/controllers/dashboard/fleetcharts/controller.go#L89-L100

A similar change was introduced for the webhook component: rancher/rancher#42060

Describe the solution you'd like

Parameters can be customized - feature parity with Fleet standalone.

Describe alternatives you've considered

Additional context