defining multiple ssh::client::config::user resources for the same user doesn't work as intended

[rbelnap]

Pull request #260 should allow multiple definitions for the same user, however this doesn't work because $name is being used for the concat tag. Since multiple defines will have different $name the concat_fragment will only add the first one (where concat_file is defined).

The tag should be keyed off of $user, not $name (I'd think tag => "${user}_ssh_config", would be appropriate)

[saz]

I don't see a reason for tag at all, as concat_file will search for target, title or tag matching.