setup: Add xtrace and pipefail to set options

pipefail for more safety and xtrace for better debuggability.
The missing xtrace here is likely what led to the docker-compose
issue going unfixed for so long as the last bit of output was
from the gencerts container and did not make any sense (because it
wasn't the issue :D ).

Signed-off-by: Manuel Mendez <mmendez@equinix.com>

setup.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 # stops the execution if a command or pipeline has an error
-set -eu
+set -euxo pipefail
 
 # Tinkerbell stack Linux setup script
 #