Merge branch 'qa-ml-fix-branches-test' into 'master'
Fix E2E test - wait for branches to not be present
See merge request gitlab-org/gitlab-ce!27805
(cherry picked from commit 3061eee6)
f15f9970 Wait for branches to not be present
a5af21cf Make max wait time a constant
99a4e973 Check test result via an assertion
f00286bc Add branch_name qa selector