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.
Provide script for managing Consul ACLs on a TF provisioned cluster for
e2e testing. Script can be used to 'enable' or 'disable' Consul ACLs,
and automatically takes care of the bootstrapping process if necessary.
The bootstrapping process takes a long time, so we may need to
extend the overall e2e timeout (20 minutes seems fine).
Introduces basic tests for Consul Connect with ACLs.
