Vagrantfile: update box to version 2.7 for VirtualBox
Vagrantfile: update box to version 2.7 for VirtualBox

Use new VM image that contains all of the Docker images used for testing packaged in.

Signed-off by: Ian Vernon <ian@cilium.io>

scanf/cilium,cilium/cilium,scanf/cilium,michi-covalent/cilium,cilium-team/cilium,tgraf/cilium,eloycoto/cilium,tgraf/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,scanf/cilium,scanf/cilium,tklauser/cilium,eloycoto/cilium,cilium-team/cilium,michi-covalent/cilium,tgraf/cilium,eloycoto/cilium,tgraf/cilium,michi-covalent/cilium,eloycoto/cilium,eloycoto/cilium,eloycoto/cilium,tklauser/cilium,scanf/cilium,scanf/cilium,eloycoto/cilium,michi-covalent/cilium,tgraf/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,tklauser/cilium,scanf/cilium,tklauser/cilium,cilium/cilium