Updates for Chef 12 and Chef.io TLD
Updates for Chef 12 and Chef.io TLD

New key and apt repo for Packagecloud.io. Update URL from getchef.com to
chef.io.

Change-Id: I225590d3410524480ce12aabe8a4805ec16b005e

kairoaraujo/openstack-manuals,kairoaraujo/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,potsmaster/openstack-manuals,gongysh2004/openstack-manual,openstack/openstack-manuals,openstack/openstack-manuals,potsmaster/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,Akasurde/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,saeki-masaki/openstack-manuals,Akasurde/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals