Update artifact URL for functional tests

12:21:26  [INFO]      [exec] 'test' command options: Namespace(base_folder='..', command='fetch-mp', direct=False, marketplace_filename='nuxeo-drive.zip', marketplace_pattern='nuxeo-drive\\-\\d\\.\\d.*?\\.zip', url='https://qa.nuxeo.org/jenkins/job/master/job/addons_nuxeo-drive-master-marketplace/lastSuccessfulBuild/artifact/marketplace/target/', work_folder='/Users/jenkins/tmp/workspace/Drive/Drive-test-volume/ftest/target-osxslave-drive')
12:21:26  [INFO]      [exec] Traceback (most recent call last):
12:21:26  [INFO]      [exec]   File "../tools/integration_tests_setup.py", line 240, in <module>
12:21:26  [INFO]      [exec]     options.url, pattern, options.work_folder, options.marketplace_filename
12:21:26  [INFO]      [exec]   File "../tools/integration_tests_setup.py", line 185, in download_package
12:21:26  [INFO]      [exec]     res = urllib2.urlopen(req)
12:21:26  [INFO]      [exec]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 154, in urlopen
12:21:26  [INFO]      [exec]     return opener.open(url, data, timeout)
12:21:26  [INFO]      [exec]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 437, in open
12:21:26  [INFO]      [exec]     response = meth(req, response)
12:21:26  [INFO]      [exec]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 550, in http_response
12:21:26  [INFO]      [exec]     'http', request, response, code, msg, hdrs)
12:21:26  [INFO]      [exec]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 475, in error
12:21:26  [INFO]      [exec]     return self._call_chain(*args)
12:21:26  [INFO]      [exec]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain
12:21:26  [INFO]      [exec]     result = func(*args)
12:21:26  [INFO]      [exec]   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 558, in http_error_default
12:21:26  [INFO]      [exec]     raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
12:21:26  [INFO]      [exec] urllib2.HTTPError: HTTP Error 404: 
12:21:26  [ERROR]