Added buildhost ready flag file for bootstrapping new distributions or architectures

In this case there is no rhel-9-arm cfengine build available so use a pre-setup image with /etc/cfengine-buildhost-ready.flag file present.

This flag file will cause the setup-cfengine-build-host.sh script to be skipped.

Ticket: ENT-13016
Changelog: none

Author: craigcomstock

ci/setup-cfengine-build-host.sh

@@ -1,6 +1,12 @@
 #!/usr/bin/env bash
 shopt -s expand_aliases
 
+ready_flag=/etc/cfengine-buildhost-ready.flag
+if [ -f "$ready_flag" ]; then
+  echo "Found $ready_flag file so skipping build host setup script and policy."
+  exit 0
+fi
+
 # Use the newest CFEngine version we can
 CFE_VERSION=3.26.0
 if [ -f /etc/centos-release ]; then
@@ -155,19 +161,15 @@ if grep -i suse /etc/os-release; then
     exit 1
   fi
 else
-#  urlget https://s3.amazonaws.com/cfengine.packages/quick-install-cfengine-enterprise.sh
-# for now, I will copy this up to the host
-#  urlget https://raw.githubusercontent.com/craigcomstock/infra/refs/heads/ENT-13247-8/templates/quick-install-cfengine-enterprise.sh.mustache
-#  mv quick-install-cfengine-enterprise.sh.mustache quick-install-cfengine-enterprise.sh
+  urlget https://s3.amazonaws.com/cfengine.packages/quick-install-cfengine-enterprise.sh
   # log sha256 checksum expected and actuall for debugging purposes
-#  echo "Expected quick install checksum: "
-#  cat ./buildscripts/ci/quick-install-cfengine-enterprise.sh.sha256
-#  echo "Actual quick install checksum: "
-#  sha256sum quick-install-cfengine-enterprise.sh
+  echo "Expected quick install checksum: "
+  cat ./buildscripts/ci/quick-install-cfengine-enterprise.sh.sha256
+  echo "Actual quick install checksum: "
+  sha256sum quick-install-cfengine-enterprise.sh
 
-#  sha256sum --check ./buildscripts/ci/quick-install-cfengine-enterprise.sh.sha256
+  sha256sum --check ./buildscripts/ci/quick-install-cfengine-enterprise.sh.sha256
   chmod +x quick-install-cfengine-enterprise.sh
-  export CFEngine_Enterprise_Package_Release=1 # hard-coded to get around the script being a mustache template
   export CFEngine_Enterprise_Package_Version="$CFE_VERSION"
   bash ./quick-install-cfengine-enterprise.sh agent
 fi