Make GitLab Runner locked to project by default
Description
Actually when registering a new runner you've false
as default answer for locking:
Whether to lock Runner to current project [true/false]:
[false]:
Since it might not be fully clear what it means, users can accept the default that is not the security-wise choice, as it may end up in unwanted access to the runner.
Proposal
Make [true]
the default for this choice