Put test data in the git repository

MATLAB R2009b is not able to handle HTTPS requests.

Also, having the data in the git makes the testsuite robust to network failures.
3 jobs for master in 1 minute and 10 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #6462
testsuite_matlab

00:00:45

failed #6464
allowed to fail
testsuite_octave

00:01:09

failed #6463
allowed to fail
testsuite_old_matlab

00:00:59

 
Name Stage Failure
failed
testsuite_octave Test
/home/gitlab-runner/builds/64f6c0e8/0/sebastien/dseries/tests/../src/utilities/x13/printoption.m                                      Unit test number  1  PASS    [  0.0186059 ]
/home/gitlab-runner/builds/64f6c0e8/0/sebastien/dseries/tests/../src/utilities/x13/printspan.m Unit test number 1 PASS [ 0.00749207 ]
/home/gitlab-runner/builds/64f6c0e8/0/sebastien/dseries/tests/../src/utilities/x13/printspan.m Unit test number 2 PASS [ 0.00685287 ]
/home/gitlab-runner/builds/64f6c0e8/0/sebastien/dseries/tests/../src/utilities/x13/printspan.m Unit test number 3 PASS [ 0.00639415 ]
/home/gitlab-runner/builds/64f6c0e8/0/sebastien/dseries/tests/../src/utilities/x13/printstart.m Unit test number 1 PASS [ 0.00513101 ]
/home/gitlab-runner/builds/64f6c0e8/0/sebastien/dseries/tests/../src/utilities/x13/setdefaultmember.m Unit test number 1 PASS [ 0.00319815 ]

make: *** [Makefile:10: check-octave] Error 1
ERROR: Job failed: exit status 1
failed
testsuite_old_matlab Test
/home/gitlab-runner/builds/2084817d/0/sebastien/dseries/tests/../src/utilities/x13/printoption.m                                      Unit test number  1  PASS    [ 0.012461 ]
/home/gitlab-runner/builds/2084817d/0/sebastien/dseries/tests/../src/utilities/x13/printspan.m Unit test number 1 PASS [ 0.005302 ]
/home/gitlab-runner/builds/2084817d/0/sebastien/dseries/tests/../src/utilities/x13/printspan.m Unit test number 2 PASS [ 0.003184 ]
/home/gitlab-runner/builds/2084817d/0/sebastien/dseries/tests/../src/utilities/x13/printspan.m Unit test number 3 PASS [ 0.003098 ]
/home/gitlab-runner/builds/2084817d/0/sebastien/dseries/tests/../src/utilities/x13/printstart.m Unit test number 1 PASS [ 0.003505 ]
/home/gitlab-runner/builds/2084817d/0/sebastien/dseries/tests/../src/utilities/x13/setdefaultmember.m Unit test number 1 PASS [ 0.002774 ]

make: *** [Makefile:14: check-matlab] Error 1
ERROR: Job failed: exit status 1