Puppetfile: bump apt from 1.8.x to 2.1x
Puppetfile: bump apt from 1.8.x to 2.1x

Change-Id: Iae4dd130e7c4597a0234c6d2939dc06f54e403c7

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration