fstests.yml: populate ci.commit_extra

We'll use:

find workflows/fstests/results/last-run -name xunit_results.txt -type f -exec cat {} \; > ci.commit_extra

This will look something like:

KERNEL:    6.11.0-rc6
CPUS:      8

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

Signed-off-by: Luis Chamberlain <[email protected]>

.github/workflows/fstests.yml

@@ -58,6 +58,7 @@ jobs:
         run: |
           make fstests-baseline TESTS=generic/003
           echo "ok" > ci.result
+          find workflows/fstests/results/last-run -name xunit_results.txt -type f -exec cat {} \; > ci.commit_extra || true
 
       - name: Get systemd journal files
         if: always() # This ensures the step runs even if previous steps failed