Fix `--resources` did not find resources with `::`

Running `puppet node exports --resources haproxy::balancermember` returned no rows. Changing capitalizations to `Haproxy::Balancermember` or `Haproxy::balancermember` did not return rows either.

By not capitalizing the resource, the caller is responsible for the correct capitalization, but also ensures we can find any resource. For example:

    $ puppet node exports | grep Haproxy
    carbon101.novalocal                       Haproxy::balancermember[carbon101-carbon]
    carbon101.novalocal                       Haproxy::balancermember[carbon101-graphite]

But trying to find the resource using `--resources` did not work:

    $ puppet node exports --resources haproxy::balancermember
    Name                                      Exports

    $ puppet node exports --resources Haproxy::balancermember
    Name                                      Exports

    $ puppet node exports --resources Haproxy::Balancermember
    Name                                      Exports

But resources with a single word work just fine:

    $ puppet node exports --resources nagios_service | head -n 2
    Name                                      Exports
    worker101.novalocal                       Nagios_service[check_apt worker101]
    $ puppet node exports --resources Nagios_service | head -n 2
    Name                                      Exports
    worker101.novalocal                       Nagios_service[check_apt worker101]

After removing the call to `#capitalize`, one can find any resource:

    $ puppet node exports --resources nagios_service | head -n 2
    Name                                      Exports

    $ puppet node exports --resources Haproxy::balancermember | head -n 2
    Name                                      Exports

    $ puppet node exports --resources Nagios_service | head -n 2
    Name                                      Exports
    worker101.novalocal                       Nagios_service[check_apt worker101]

    $ puppet node exports --resources Haproxy::Balancermember | head -n 2
    Name                                      Exports
    carbon101.novalocal                       Haproxy::balancermember[carbon101-graphite]