maint: Fix pkg_spec test

The pkg_spec test meant to compare different hashes that were created
like

Hash.new(:key1 => val1, :key2 => val2)

At least on ruby 1.9 this will always return an empty hash so the spec
tests didn't test correctness at all.

The fix uses just {:key1 => val1, :key2 => val2} to create the different
hashes so the comparsion does make sense again.