CK CI migration.

## Motivation

Enable the CK CI after migration from standalone repo.

## Technical Details

Modify the jenkinsfile in projects/composablekernel to update the CI
workflow.

## Test Plan

This is for CK internal testing only.

## Test Result

Set up new CK CI pipeline/dashboard.

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[CK] Add FP8 KV_BLOCKSCALE support for batch prefill
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Implement per-page K/V quantization for paged attention:
  - Add KV_BLOCKSCALE enum to BlockAttentionQuantScaleEnum
  - Use exp2 shift trick to eliminate explicit P scaling overhead
- Prefetch physical pages offset for KV cache, overlaps with
computations

## Proposed changes

Please describe the motivation behind the pull request, whether it
enables a new feature or fixes a bug. If there are associated pull
requests or issues, please link them to the pull request.

## Checklist

Please put an `x` into the boxes that apply. You can also fill these out
after creating the PR. If you're not sure, please don't hesitate to ask.

- [ ] I have added tests relevant to the introduced functionality, and
the unit tests are passing locally
- [ ] I have added the test to REGRESSION_TESTS list defined at the top
of CMakeLists.txt in tests/CMakeLists.txt, **IF** the test takes more
than 30 seconds to run.
- [ ] I have added inline documentation which enables the maintainers
with understanding the motivation
- [ ] I have removed the stale documentation which is no longer relevant
after this pull request
- [ ] (If this change is user-facing) I have added release notes which
provide the end users with a brief summary of the improvement from this
pull request
- [ ] I have run `clang-format` on all changed files
- [ ] Any dependent changes have been merged

## Discussion

If this is a relatively large or complex change, feel free to start a
discussion by explaining why you chose the solution you did and what
alternatives you considered

[CK] MICI: Use reference repo for checkout operations

## Motivation

- Maintain a reference repo on slave nodes that speeds up any
clone/checkout operations

## Technical Details

- clone a ref repo if it does not exist
- update ref repo if it does exist
- checkout after ref repo is updated
- eliminates double clone

## Test Result

- Initial checkouts succeeded

[CK TILE] fix bugs of preshuffle_b

Fix building issue on gfx950