Enable unauthenticated access to public SSH keys via the API
### Summary
I try to get my ssh key with the api consulting the follow url https://gitlab.com/api/v3/users/1115660/keys but the response show one message 403 Forbidden
Nevertheless when consulting another url for get my ssh key https://gitlab.com/JesusZapata.keys the response are my ssh key's
### Steps to reproduce
Goto https://gitlab.com/api/v3/users/1115660/keys and see message 403 Forbidden
### What is the current *bug* behavior?
The URL https://gitlab.com/api/v3/users/1115660/keys no show my ssh key's
### What is the expected *correct* behavior?
The URL https://gitlab.com/api/v3/users/1115660/keys show my ssh key's
issue