kdevops-ci: xfs_reflink_4k: f4ee14a36e5e docs/fstests.md: document A/B testing with CLI environment variables

BUILD INFO:
  kdevops: f4ee14a36e5e ("docs/fstests.md: document A/B testing with CLI environment variables")
  Workflow: xfs_reflink_4k
  Test: generic/003
  Kernel: v6.15 ("Linux 6.15")
  Duration: 1m 35s

EXECUTION RESULTS:
KERNEL:    6.15.0
CPUS:      2

xfs_reflink_4k: 1 tests, 15 seconds
  generic/003  Pass     12s
Totals: 1 tests, 0 skipped, 0 failures, 0 errors, 12s

METADATA:
workflow: xfs_reflink_4k | scope: kdevops | test: generic/003 | requested: v6.15 | actual: v6.15 | result: ok
CPUS:      2

xfs_reflink_4k: 1 tests, 15 seconds
  generic/003  Pass     12s
Totals: 1 tests, 0 skipped, 0 failures, 0 errors, 12s

Author: kdevops

fstests/gh/linux/20251023/0004/docs-fstests-md-document-a-b-testing-with-cli-enviro.../v6.15.tar.xz

@@ -0,0 +1 @@
+v6.15.xz

fstests/gh/linux/20251023/0004/docs-fstests-md-document-a-b-testing-with-cli-enviro.../v6.15.xz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 227996