Publish links to the release binaries

Closes #1411 (closed)

.gitlab/releaser/releaselinks.py

+import json
+import os
+import urllib.request
+
+from projectapi import ProjectApi
+
+class ReleaseLinks(ProjectApi):
+    '''
+    Release links API.
+    '''
+    def __init__(self):
+        ProjectApi.__init__(self, '/releases/{}/assets/links'.format(os.environ['CI_COMMIT_TAG']))
+
+    def create_artifact(self, artifact):
+        '''
+        Create the link for the given artifact.
+        :param artifact: The artifact data.
+        :type artifact: dict
+        '''
+        send_data = {
+            'name': '{} {} - {}'.format(artifact['category'], artifact['arch'], artifact['type']),
+            'filepath': '/binaries/{}'.format(artifact['name']),
+            'url': artifact['url']
+        }
+        send_data_serialized = json.dumps(send_data).encode('utf-8')
+        request = self.build_request(data=send_data_serialized, method='POST')
+        request.add_header('Content-Type', 'application/json')
+        urllib.request.urlopen(request)