r: add gitlab2 for gitlab.com not being a good idea due to US
> NOTE to users in Crimea, Cuba, Iran, North Korea, Sudan, and Syria: GitLab.com may not be accessible after the migration to Google. Google has informed us that there are legal restrictions that are imposed for those countries. See this U.S. Department of the Treasury link for more details. At this time, we can only recommend that you download your code or export relevant projects as a backup. See this issue for more discussion.