Parse events tests got broken after following commit:

  perf tools: Fix trace events storms due to weight demux
  commit 0983cc0d
  Author: Frederic Weisbecker <fweisbec@gmail.com>

that added PERF_SAMPLE_PERIOD sample type for tracepoints.

Updating related tests.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1343825338-10618-1-git-send-email-jolsa@redhat.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>