Add docker image for DNS Shotgun integration
This MR provides container image, which runs Ansible playbook https://gitlab.nic.cz/knot/resolver-benchmarking, which in turn connects to AWS VMs defined by image added in !113
This MR provides container image, which runs Ansible playbook https://gitlab.nic.cz/knot/resolver-benchmarking, which in turn connects to AWS VMs defined by image added in !113