Update community.html.erb to include Levant.
Update community.html.erb to include Levant.

This change requests that Levant be added to the Nomad community page. Levant is an open source templating and deployment tool for HashiCorp Nomad jobs that provides realtime feedback and detailed failure messages upon deployment issues. Further details about Levant can be seen on the [jrasell/levant](https://github.com/jrasell/levant) GitHub page.
Ashald/nomad,hashicorp/nomad,Ashald/nomad,burdandrei/nomad,hashicorp/nomad,Ashald/nomad,Ashald/nomad,Ashald/nomad,burdandrei/nomad,dvusboy/nomad,nak3/nomad,dvusboy/nomad,hashicorp/nomad,nak3/nomad,dvusboy/nomad,burdandrei/nomad,Ashald/nomad,nak3/nomad,nak3/nomad,burdandrei/nomad,nak3/nomad,hashicorp/nomad,dvusboy/nomad,nak3/nomad,nak3/nomad,burdandrei/nomad,burdandrei/nomad,dvusboy/nomad,hashicorp/nomad,hashicorp/nomad,dvusboy/nomad,burdandrei/nomad,Ashald/nomad,dvusboy/nomad