Please have a look at this online installation guide for V 7.1
I took a look and that guide still does not mention GitLab SaaS, and instead mentions:
GitLab: Latest version (with backward compatibility to GitLab 11)
Watch the recorded webinar!
Pick up some tips and tricks with Context Variables
Learn how media organizations have achieved success with Data Integration
Look at6 ways to start utilizing Machine Learning with Amazon We Services and Talend