Steps to Reproduce:
1. Log in as non-root user
2. Run lime-user in the command line
3. The user can not select "localhost"
 
This is because the localhost uses "local authentication" method to connect cimom service("owcimomd"), only "root" user is valid user.
But if you want to use localhost here, you can select "remote host", input your IP address (not "localhost" or "127.0.0.1"), and then input "root" in "user" field, input your password in "password" field. When doing this, make sure that the daemon owcimomd is started.