e2e: print consulacls scripts output as string
e2e: print consulacls scripts output as string

The clean up in #8908 inadvertently caused the output from the scripts
involved in the Consul ACL bootstrap process to be printed as a big blob
of bytes, which is slightly less useful than the text version.

dvusboy/nomad,dvusboy/nomad,hashicorp/nomad,hashicorp/nomad,burdandrei/nomad,hashicorp/nomad,dvusboy/nomad,dvusboy/nomad,burdandrei/nomad,hashicorp/nomad,burdandrei/nomad,burdandrei/nomad,dvusboy/nomad,hashicorp/nomad,burdandrei/nomad,burdandrei/nomad,hashicorp/nomad,dvusboy/nomad,dvusboy/nomad,burdandrei/nomad