Add create_merge_request ability to our gitlab wrapper class

nightlies/trigger_pipelines.py

@@ -91,6 +91,22 @@ class Gitlab(object):
         pipeline = subprocess.check_output(cmd)
         return json.loads(pipeline.decode())
 
+    def create_merge_request(self, project_id, source_branch, target_branch, title,
+                             assignee_id='', description='', target_project_id='',
+                             labels='', milestone_id='', remove_source_branch=''):
+        url = "projects/{}/merge_requests?"
+        url += "&".join(['source_branch={}', 'target_branch={}', 'title={}'])
+        url += "&".join(['assignee_id={}', 'description={}', 'target_project_id={}',
+                         'labels={}', 'milestone_id={}', 'remove_source_branch={}'])
+        url = url.format(project_id, source_branch, target_branch, title,
+                         assignee_id, description, target_project_id, labels,
+                         milestone_id, remove_source_branch)
+        cmd = ["curl", "--request", "POST", "--header",
+               "PRIVATE-TOKEN: {}".format(self.token),
+               self.base_url + url]
+        pipeline = subprocess.check_output(cmd)
+        return json.loads(pipeline.decode())
+
 
 def main(packages_list):
     gitlab = Gitlab(os.environ.get('GITLAB_API_TOKEN'))