How to configure CRL in F5

Firstly, I don't think that's the right place anymore. I'd suggest you remove that file and use the configuration utility to upload it: System > File Management.

Once uploaded I believe you specify the CRL in a ClientSSL profile as necessary based on your needs. If you're on v11 but not v11.4 do note this issue: http://support.f5.com/kb/en-us/solutions/public/14000/000/sol14023.html