Sorting the listing command outputs by name field.
Spec changes for sorting by name
Func spec for network listing.
Corrected copyright.
Merge pull request #112 from opscode/ameya-sorting-by-names

Sorting list output by name field
Added changes for network-ids option.
Fixed broken test for group list.
Unit test for --netword-ids option.
Merge branch 'pd-add-network-id-option' of https://github.com/opscode/knife-openstack into pd-add-network-id-option