[CI] Enable L2 ccache in nightly coverage and fleet build workflow

[SigureMo]

PR Category

Execute Infrastructure

PR Types

Devs

Description

同 #77174，在 nighlty coverage 流水线和 fleet build 流水线开启 L2 ccache

[paddle-bot]

你的PR提交成功，感谢你对开源项目的贡献!
请关注后续CI自动化测试结果，详情请参考Paddle-CI手册。
Your PR has been submitted. Thanks for your contribution!
Please wait for the result of CI firstly. See Paddle CI Manual for details.

[Copilot]

Pull request overview

This PR enables L2 ccache configuration in nightly coverage and fleet build workflows, following the same pattern established in PR #77174. The changes implement a two-tier caching strategy with L1 cache on local shared storage and L2 cache on CFS (Cloud File System).

• Migrates nightly coverage workflow from legacy ccache structure to L1/L2 tiered cache setup
• Adds comprehensive L2 ccache configuration to the fleet build job in H-Coverage workflow
• Reduces CCACHE_MAXSIZE from 200G to 50G in alignment with other workflows using L2 cache

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/Night_ALL_Coverage.yml	Updated ccache configuration to use L1/L2 cache structure, changed cache directory paths, added L2 cache storage, adjusted max cache size to 50G, and updated volume mounts
.github/workflows/H-Coverage.yml	Added complete L2 ccache configuration to fleet-build job including cache directories, size limits, statistics logging, and sloppiness settings with corresponding volume mounts

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.