LU-8239 utils: llanalyze logs parser fix

llanalyze looks to be broken:
- thread PID parsed not correctly;
- competition and blocking upcalls start and finish message is parsed
wrong way.

This patch fixes problems with logs parsing.

Test-Parameters: trivial
Signed-off-by: Artem Blagodarenko <artem.blagodarenko@seagate.com>
Change-Id: I412120a2c7e877ba5374178a6a246984e2dcca08
Reviewed-on: http://review.whamcloud.com/20632
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>