bde22faecb
On master, we are removing all traces of Buck (Idb93a48345). To avoid recreating buck-cache when maintainers switch between stable branches, backport the directory renaming to stable-2.14 and later. Change-Id: Ia9c58bc5ac8fd28bac7ee220e917580b60f25a69 (cherry picked from commit 7788ae9cb2165d8d4f99e9cbdd1887ba3d201f41)