Mark old Ansible role repositories as obsolete, fix links in repo README

[roman-khimov]

Every obsolete repository should have something like "this repo is obsolete since, please use new collection available here" in its README, these are:

• https://github.com/nspcc-dev/ansible-neofs-http-gw
• https://github.com/nspcc-dev/ansible-neofs-storage
• https://github.com/nspcc-dev/ansible-neofs-rest-gw
• https://github.com/nspcc-dev/ansible-neofs-ir
• https://github.com/nspcc-dev/ansible-neofs-s3-gw

[532910]

done

[roman-khimov]

Not exactly, we still have links to old repos on https://github.com/nspcc-dev/