antool: fix match file of 'antool-analyze' test

[ldorau]

Ten SyS_mmap calls come from ten pthread_create() calls in this file. It happens that not all of them are detected, what causes sporadic failures of this test. Make them optional, because detecting all of them is not important.

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This change is 

[codecov[bot]]

Codecov Report

Merging #391 into master will increase coverage by 0.02%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #391      +/-   ##
==========================================
+ Coverage   76.87%   76.89%   +0.02%     
==========================================
  Files          67       67              
  Lines        8276     8276              
  Branches     1665     1665              
==========================================
+ Hits         6362     6364       +2     
  Misses       1495     1495              
+ Partials      419      417       -2

Flag	Coverage Δ
#ltp_tests	46.45% <ø> (+0.01%)	:arrow_up:
#sqlite_tests	45.15% <ø> (-0.01%)	:arrow_down:
#tests_antool	14.71% <ø> (ø)	:arrow_up:
#tests_posix_multi_threaded	25.02% <ø> (-0.03%)	:arrow_down:
#tests_posix_single_threaded	54.21% <ø> (ø)	:arrow_up:
#tests_preload	44.65% <ø> (-0.02%)	:arrow_down:

Impacted Files	Coverage Δ
src/libpmemfile-posix/inode.c	88.65% <0%> (+0.34%)	:arrow_up:
src/libpmemfile-posix/data.c	94.82% <0%> (+0.39%)	:arrow_up:

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[marcinslusarz]

This looks suspiciously like a threading bug in vltrace...

[ldorau]

@marcinslusarz

This looks suspiciously like a threading bug in vltrace...

The reason is: pthread_create() fails with the error "Resource temporarily unavailable" in tested application, not in vltrace.

[ldorau]

pthread_create() may sometimes fail, so this test may too, so let's leave it as is.