using https for the repo

playbooks/roles/xqueue/files/git_ssh.sh

-#!/bin/sh
-exec /usr/bin/ssh -o StrictHostKeyChecking=no -i /etc/git-identity "$@"

playbooks/roles/xqueue/vars/main.yml

@@ -15,7 +15,7 @@ xqueue:
   auth_config: {}
   env_config: {}
 
-  source_repo: git://github.com/edx/xqueue.git
+  source_repo: https://github.com/edx/xqueue.git
   version: 'HEAD'
   pre_requirements_file:    "{{ xqueue_code_dir }}/pre-requirements.txt"
   post_requirements_file:   "{{ xqueue_code_dir }}/requirements.txt"