* filer: shrink zip spool threshold in tests to fix 32-bit OOM
TestSpoolZipReaderTempFile and TestSpoolZipReaderLimit each allocate
~33-70 MiB to cross the 32 MiB in-memory spool threshold. On linux/386 the
weed/filer test binary already runs near the 4 GiB address-space limit, so
these allocations reliably crash it with "out of memory" mid-suite.
Make zipSpoolMemoryLimit a var and drop it to 1 KiB in those tests, which
exercises the same memory-vs-temp-file spool paths with KiB-sized buffers.
* s3 lifecycle: update stale runShard and WalkerFunc call sites in tests
Recent master changes added a walks param to runShard (#11797) and made WalkerFunc take []int, but replay_view_test.go and run_bounded_test.go still use the old signatures, breaking go vet and test builds on merge.