fix(ci): avoid running drivers CI jobs that need secrets in PR coming from forks

[FedeDP]

What type of PR is this?

/kind bug

Any specific area of the project related to this PR?

/area CI

Does this PR require a change in the driver versions?

What this PR does / why we need it:

The current solution is not working because github.repository resolves to the target github repository that is always falcosecurity/libs.
That trick is needed to avoid run a github action on forks.
Instead, we need to avoid running a github action on PRs coming from forks; we need to rely on github.event.pull_request.head.repo.full_name.

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

[github-actions]

Perf diff from master - unit tests

     5.02%     -1.36%  [.] sinsp_evt::load_params
     5.59%     -1.31%  [.] next
     5.65%     +1.13%  [.] sinsp_evt::get_type
     4.34%     +0.83%  [.] sinsp_parser::process_event
     2.93%     -0.69%  [.] scap_event_decode_params
     0.27%     +0.66%  [.] std::_Hashtable<long, std::pair<long const, std::shared_ptr<sinsp_fdinfo> >, std::allocator<std::pair<long const, std::shared_ptr<sinsp_fdinfo> > >, std::__detail::_Select1st, std::equal_to<long>, std::hash<long>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<false, false, true> >::_M_find_before_node
     1.08%     -0.48%  [.] scap_event_has_large_payload
     1.51%     -0.47%  [.] std::vector<sinsp_evt_param, std::allocator<sinsp_evt_param> >::emplace_back<sinsp_evt*, unsigned int&, char const*, unsigned long&>
     5.68%     +0.44%  [.] sinsp::next
     1.03%     -0.42%  [.] 0x00000000000e93f0

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                                            +0.0066         +0.0066           149           150           149           150
BM_sinsp_split_median                                          +0.0078         +0.0077           149           150           149           150
BM_sinsp_split_stddev                                          -0.4351         -0.4352             1             1             1             1
BM_sinsp_split_cv                                              -0.4388         -0.4389             0             0             0             0
BM_sinsp_concatenate_paths_relative_path_mean                  -0.0080         -0.0080            47            46            47            46
BM_sinsp_concatenate_paths_relative_path_median                +0.0009         +0.0009            46            46            46            46
BM_sinsp_concatenate_paths_relative_path_stddev                +1.0118         +1.0108             0             1             0             1
BM_sinsp_concatenate_paths_relative_path_cv                    +1.0281         +1.0271             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_mean                     -0.0067         -0.0067            17            17            17            17
BM_sinsp_concatenate_paths_empty_path_median                   -0.0021         -0.0021            17            17            17            17
BM_sinsp_concatenate_paths_empty_path_stddev                   -0.3353         -0.3354             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_cv                       -0.3308         -0.3310             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_mean                  -0.0196         -0.0196            50            49            50            49
BM_sinsp_concatenate_paths_absolute_path_median                -0.0220         -0.0220            50            49            50            49
BM_sinsp_concatenate_paths_absolute_path_stddev                +0.9118         +0.9128             0             1             0             1
BM_sinsp_concatenate_paths_absolute_path_cv                    +0.9500         +0.9510             0             0             0             0
BM_sinsp_split_container_image_mean                            +0.0069         +0.0069           353           355           353           355
BM_sinsp_split_container_image_median                          +0.0139         +0.0139           350           355           350           355
BM_sinsp_split_container_image_stddev                          -0.5449         -0.5449             4             2             4             2
BM_sinsp_split_container_image_cv                              -0.5481         -0.5480             0             0             0             0

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.55%. Comparing base (5b9db23) to head (b30975f).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2060      +/-   ##
==========================================
- Coverage   73.55%   73.55%   -0.01%     
==========================================
  Files         253      253              
  Lines       31863    31863              
  Branches     5651     5632      -19     
==========================================
- Hits        23438    23437       -1     
+ Misses       8420     8400      -20     
- Partials        5       26      +21     

Flag	Coverage Δ
libsinsp	73.55% <ø> (-0.01%)	⬇️

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[FedeDP]

Well, we can eventually move to 0.19.0, this is not urgent.

[Andreagit97]

/approve

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

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

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