Changes

feat: build tiflash with rust cache  (#3031)

### **User description**
build tiflash with rust cache for reducing external traffic downloads


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### **PR Type**
enhancement


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### **Description**
- Added a new string parameter `USE_TIFLASH_RUST_CACHE` with the value
'true' to the build specification in `dev-build.groovy`.
- This change aims to build TiFlash with Rust cache to reduce external
traffic downloads.



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### **Changes walkthrough** 📝
<table><thead><tr><th></th><th align="left">Relevant
files</th></tr></thead><tbody><tr><td><strong>Enhancement</strong></td><td><table>
<tr>
  <td>
    <details>
<summary><strong>dev-build.groovy</strong><dd><code>Add
`USE_TIFLASH_RUST_CACHE` parameter to build spec</code>&nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; </dd></summary>
<hr>

jenkins/pipelines/cd/dev-build.groovy

<li>Added a new string parameter <code>USE_TIFLASH_RUST_CACHE</code>
with the value <br>'true' to the build specification.<br>


</details>


  </td>
<td><a
href="https://github.com/PingCAP-QE/ci/pull/3031/files#diff-883dea4e305e8d8dffff92a73f812d069fd76eaf118e96b9efd1bdc219de9fe6">+1/-0</a>&nbsp;
&nbsp; &nbsp; </td>

</tr>                    
</table></td></tr></tr></tbody></table>

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