improve "integration and system" test as part of the CI

[Remi-Gau]

• test the basic pipeline on some basic dataset
  • SPM MoAE
  • SPM MoAE with matlab
  • facerep with matlab
  • facerep with octave
  • a simple openneuro dataset

[Remi-Gau]

FFX fails

https://travis-ci.com/github/cpp-lln-lab/CPP_BIDS_SPM_pipeline/jobs/423270841

SPM12: spm_est_non_sphericity (v7577)              14:52:43 - 31/10/2020

========================================================================

Chunk   1/1                             :                  ...processing 31-Oct-2020 14:52:43 - Failed  'Model estimation'

file2mat.c not compiled - see Makefile

In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/@file_array/private/file2mat.m" (v7147), function "file2mat" at line 16.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/@file_array/subsref.m" (v7439), function "subsref>multifile2mat" at line 179.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/@file_array/subsref.m" (v7439), function "subsref>subfun" at line 99.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/@file_array/subsref.m" (v7439), function "subsref" at line 65.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/@nifti/subsref.m" (v7147), function "subsref>rec" at line 221.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/@nifti/subsref.m" (v7147), function "subsref" at line 45.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/spm_data_read.m" (v7577), function "spm_data_read" at line 62.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/spm_est_non_sphericity.m" (v7577), function "spm_est_non_sphericity" at line 158.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/spm_spm.m" (v7738), function "spm_spm" at line 433.
In file "/home/travis/build/cpp-lln-lab/CPP_BIDS_SPM_pipeline/spm12/config/spm_run_fmri_est.m" (v7354), function "spm_run_fmri_est" at line 36.

[Remi-Gau]

Figure out how to make it run:

• only for PRs on master
• only once all the previous jobs have passed (using different travis stages)