perf test: Update test for --for-each-cgroup option

To simply check the number of output lines with and without the option.

Before this series, it failed like below:

  $ perf test -v 125
  125: perf stat --bpf-counters --for-each-cgroup test:
  ---- start ----
  test child forked, pid 1941516
  Normal output has 22 lines, but it now has 54
  ---- end(-1) ----
  125: perf stat --bpf-counters --for-each-cgroup test         : FAILED!

Signed-off-by: Namhyung Kim <namhyung@kernel.org>

0 files changed, 0 insertions, 0 deletions