Arming Ceph: CI Enhancement and UADK Integration

on YouTube ↗10m

" summary

ARM CI gets environment fixes and faster pipelines with cleaned legacy code and uniform OS images, more than 20 tickets closed and flaky failures like the Crimson store detector largely resolved, make check now runs reliably and shorter though some RBD and MGR unit tests still fail. Proposal exists to move slow tests from make check into teuthology and restore ARM gates on backports. UADK integration adds a comparator class merged to mainline and delivers 7–8% CPU savings for RGW and ~50% CPU savings for RBD.

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