`maven_artifact` uses httplib2 that attempts anonymous access even if user/password is provided.

So access log looks like:

```
/opt/bitnami/apps/artifactory/artifactory_home/logs/request.log:

20191108102644|3|REQUEST|188.163.xxx.xxx|non_authenticated_user|GET|/libs-snapshot-local/xxx/2.14.0-SNAPSHOT/maven-metadata.xml|HTTP/1.1|401|0
20191108102644|2|REQUEST|188.163.xxx.xxx|reader|GET|/libs-snapshot-local/xxx/2.14.0-SNAPSHOT/maven-metadata.xml|HTTP/1.1|200|792
```

Our repository Artifactory blocks access (per IP??) if too many 401 happens.

Ansible then fails with:

```
failed: [stage-server] (item={'name': 'tp-sc', 'jmx_port': 18004}) => {"ansible_loop_var": "item", "changed": false,
  "msg": "Failed to connect to example.com at port 443: [Errno 110] Connection timed out",
  "status": -1,
  "url": "https://example.com/artifactory/libs-snapshot-local/xxx/2.14.0-SNAPSHOT/server-2.14.0-20191108.084713-5.jar.md5"}
```

There is a patch that fixes the behavior of httplib2 : https://github.com/DorianGeraut/maven_artifact_work/commit/5fff2870ba1e8dee864b21eb3a2ea40c10547484

if (not artifact.version and not artifact.version_by_spec) or artifact.version == "latest":
            artifact = Artifact(artifact.group_id, artifact.artifact_id, self.find_latest_version_available(artifact), None,
                                artifact.classifier, artifact.extension)
        url = self.find_uri_for_artifact(artifact)
        tempfd, tempname = tempfile.mkstemp(dir=tmpdir)
        try:
            
            if self.local:
                parsed_url = urlparse(url)
                if os.path.isfile(parsed_url.path):
                    shutil.copy2(parsed_url.path, tempname)
                else:
                    return "Can not find local file: " + parsed_url.path
            else:
                response = self._request(url, "Failed to download artifact " + str(artifact))
                with os.fdopen(tempfd, 'wb') as f:
                    shutil.copyfileobj(response, f)
            if verify_download:
                invalid_md5 = self.is_invalid_md5(tempname, url)
                if invalid_md5:
                    
                    os.remove(tempname)
                    return invalid_md5
        except Exception as e:
            os.remove(tempname)
            raise e
        
        shutil.move(tempname, artifact.get_filename(filename))
        return None
    def is_invalid_md5(self, file, remote_url):