Incorrect path argument for Golint

When running the `verify-golint.sh` incorrect path was served to the Golint command.
eg:
`github.com/openshift/origin/./pkg/service`, which caused error: 
 open github.com/openshift/origin/./pkg/service: no such file or directory

So now the Golint will take absolute path to the file.
You just need to remove the `-r` option. You're not using extended regular expressions anyway.