Unquarantine Geo LFS specs

What does this MR do?

This MR unquarantines 4 LFS specs that have been passing in the nightly pipeline for several days:

• Geo HTTP LFS push spec: gitlab-org/quality/testcases#689
• Geo HTTP LFS push to secondary spec: gitlab-org/quality/testcases#699
• Geo SSH LFS push spec: gitlab-org/quality/testcases#687
• Geo SSH LFS push to secondary spec: gitlab-org/quality/testcases#697

This MR also makes test project descriptions in these specs more detailed

Note: The related issue had already been closed with the fix: #212632 (closed)