[COOK-3808] fixes nginx::passenger run fails because of broken installation of package dependencies

When running nginx::passenger the arguments given to the 'package' command are broken:

    Recipe: nginx::passenger
    package[["default", ["ruby-dev", "libcurl4-gnutls-dev"]]] action install
    ================================================================================
    Error executing action `install` on resource 'package[["default", ["ruby-dev", "libcurl4-gnutls-dev"]]]'
    ================================================================================

I have removed the "default => ..." hash from the parameters to the value_for_platform_family method.