fix(test/drivers): fixed s390x Werror related failures for drivers tests

[FedeDP]

What type of PR is this?

/kind bug

Any specific area of the project related to this PR?

/area tests

Does this PR require a change in the driver versions?

What this PR does / why we need it:

Extracted from #2064 .

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[FedeDP]

/milestone 0.18.0

[Andreagit97]

/approve

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Andreagit97, FedeDP

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.58%. Comparing base (16ac62f) to head (0738711).
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2066      +/-   ##
==========================================
+ Coverage   73.55%   73.58%   +0.02%     
==========================================
  Files         253      253              
  Lines       31863    31867       +4     
  Branches     5639     5652      +13     
==========================================
+ Hits        23437    23449      +12     
- Misses       8410     8417       +7     
+ Partials       16        1      -15     

Flag	Coverage Δ
libsinsp	73.58% <ø> (+0.02%)	⬆️

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[github-actions]

Perf diff from master - unit tests

     3.11%     -1.33%  [.] scap_event_decode_params
     6.23%     +1.20%  [.] sinsp::next
     3.44%     +0.98%  [.] sinsp_thread_manager::find_thread
     4.26%     -0.96%  [.] gzfile_read
    10.54%     +0.77%  [.] sinsp_parser::reset
     4.71%     -0.72%  [.] sinsp_evt::load_params
     3.83%     +0.60%  [.] sinsp_parser::process_event
     1.48%     +0.58%  [.] libsinsp::sinsp_suppress::process_event
     6.28%     -0.58%  [.] sinsp_evt::get_type
     0.88%     +0.52%  [.] sinsp_evt::get_ts

Heap diff from master - unit tests

peak heap memory consumption: 0B
peak RSS (including heaptrack overhead): 0B
total memory leaked: 0B

Heap diff from master - scap file

peak heap memory consumption: 0B
peak RSS (including heaptrack overhead): 0B
total memory leaked: 0B

Benchmarks diff from master

Comparing gbench_data.json to /root/actions-runner/_work/libs/libs/build/gbench_data.json
Benchmark                                                         Time             CPU      Time Old      Time New       CPU Old       CPU New
----------------------------------------------------------------------------------------------------------------------------------------------
BM_sinsp_split_mean                                            +0.0190         +0.0190           148           151           148           151
BM_sinsp_split_median                                          +0.0213         +0.0213           148           151           148           151
BM_sinsp_split_stddev                                          +2.3228         +2.3219             0             1             0             1
BM_sinsp_split_cv                                              +2.2608         +2.2600             0             0             0             0
BM_sinsp_concatenate_paths_relative_path_mean                  +0.1072         +0.1072            41            46            41            46
BM_sinsp_concatenate_paths_relative_path_median                +0.1073         +0.1073            41            46            41            46
BM_sinsp_concatenate_paths_relative_path_stddev                +0.1109         +0.1147             0             0             0             0
BM_sinsp_concatenate_paths_relative_path_cv                    +0.0033         +0.0067             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_mean                     -0.0049         -0.0049            17            17            17            17
BM_sinsp_concatenate_paths_empty_path_median                   -0.0002         -0.0002            17            17            17            17
BM_sinsp_concatenate_paths_empty_path_stddev                   -0.7751         -0.7750             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_cv                       -0.7740         -0.7739             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_mean                  +0.1876         +0.1876            41            49            41            49
BM_sinsp_concatenate_paths_absolute_path_median                +0.1830         +0.1829            41            49            41            49
BM_sinsp_concatenate_paths_absolute_path_stddev                +3.9877         +3.9909             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_cv                    +3.1998         +3.2026             0             0             0             0
BM_sinsp_split_container_image_mean                            -0.0113         -0.0113           359           355           359           355
BM_sinsp_split_container_image_median                          -0.0131         -0.0131           359           354           359           354
BM_sinsp_split_container_image_stddev                          +0.8994         +0.8980             2             4             2             4
BM_sinsp_split_container_image_cv                              +0.9211         +0.9197             0             0             0             0