perf test: Add 'perf record cgroup' filtering test

perf test: Add 'perf record cgroup' filtering test

  $ sudo ./perf test filtering -vv
   96: perf record sample filtering (by BPF) tests:
  --- start ---
  test child forked, pid 2966908
  Checking BPF-filter privilege
  Basic bpf-filter test
  Basic bpf-filter test [Success]
  Failing bpf-filter test
  Failing bpf-filter test [Success]
  Group bpf-filter test
  Group bpf-filter test [Success]
  Multiple bpf-filter test
  Multiple bpf-filter test [Success]
  Cgroup bpf-filter test
  Cgroup bpf-filter test [Success]
  ---- end(0) ----
   96: perf record sample filtering (by BPF) tests                     : Ok

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20240826221045.1202305-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>