Use a render_example prop in bundles.yml to decide if we render example

ctctl

@@ -664,7 +664,7 @@ ctctl_render_templates(){
       # And now delete the merged config
       rm -f ${CTCTL_BUNDLE_CONFIG}
 
-      if [ -n "${CTCTL_RENDER_EXAMPLE}" -a "${CTCTL_RENDER_EXAMPLE}" = "true" ]; then
+      if [ "$(echo ${BUNDLE} | jq -r '.render_example // "false"')" = "true" ]; then
         echo "Rendering example job with bundle variables only"
 
         I=0

ctctl.example.conf

@@ -25,7 +25,3 @@
 # LOKI_PWD_CMD="vault read -field pwd kv/admin/loki"
 # Regex of tasks to ignore with ctctl loki
 # LOKI_IGNORE_TASKS="connect-proxy-.+|tls-proxy|metrics-proxy|pgbouncer"
-
-# You can render a bundle in the example directory of the bundle itself
-# using only the default variables
-# CTCTL_RENDER_EXAMPLE=true