[E2E] PROMOTE TO BLOCKING: clone_push_pull_project_snippet_spec.rb

What does this MR do?

Promotes the following e2e tests to the blocking bucket:

1. Create Version control for project snippets clones, pushes, and pulls a project snippet over HTTP, edits via UI | Testcase | Spec metrics

2. Create Version control for project snippets clones, pushes, and pulls a project snippet over SSH, deletes via UI | Testcase | Spec metrics

This MR was created based on data from reliable e2e test report: #451727 (closed)

(This MR was automatically generated by gitlab_quality-test_tooling at 2024-03-25 02:04:52 UTC)