add pages zip http client timeout option

What does this MR do?

Adds options for pages zip http client timeout

Reference - !2338 (merged)

Related issues

• gitlab-org/gitlab-pages#457 (closed)
• gitlab-org/gitlab-pages!710 (merged)

Checklist

See Definition of done.

For anything in this list which will not be completed, please provide a reason in the MR discussion.

Required

• Merge Request Title and Description are up to date, accurate, and descriptive
• MR targeting the appropriate branch
• MR has a green pipeline on GitLab.com

Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes
• Documentation created/updated
• Tests added
• Integration tests added to GitLab QA
• Equivalent MR/issue for omnibus-gitlab opened - gitlab-org/omnibus-gitlab!5975 (merged)