We got rid of the '../../spec_helper' style requires, but a few of them snuck
back in in recent changes.  This purges them out, replaced with the header:

    #!/usr/bin/env rspec
    require 'spec_helper'

Reviewed-By: Nick Lewis <nick@puppetlabs.com>

Reviewed-By: Mike Stahnke

We now use a shebang of: #!/usr/bin/env rspec

This enables the direct execution of spec tests again, which was lost earlier
during the transition to more directly using the rspec2 runtime environment.

This allows to manage the global device list of vlans.
Currently supports only cisco IOS devices.

This is as easy as:

Vlan {
 device_url => "ssh://user:pass@switch.domain.com/"
}

vlan {
 "200": description => "R&D";
 "99":  description => "Management";
}

The device_url conforms to the same specs as for the interface
type.

Signed-off-by: Brice Figureau <brice-puppet@daysofwonder.com>