Add architecture mapping for arm64 to aarch64
Add architecture mapping for arm64 to aarch64

Signed-off-by: Jaymala Sinha <a04666c8f252cd920997ac90b34d2eff29d09ccc@chef.io>

chef/omnitruck,chef/opscode-omnitruck,chef/omnitruck,chef/opscode-omnitruck,chef/opscode-omnitruck,chef/omnitruck