Fix the curl pipe'ed to bash docs to work with the ssh-host.sh changes.

[jdoss]

This addresses the issues when using curl to pipe the file directly to bash. This due to how a pipe works. The bash script uses read which in a piped use case reads from standard input (the pipe), but the shell already read all the standard input so there isn't anything for the read to read.

This change uses <() which will store curl command as a temp file and executes it with bash.