Merge pull request #213 from yardbirdsax/bug/210

Fix for #210: can't find Consul binary when executing through Packer

modules/install-consul/install-consul

@@ -300,7 +300,9 @@ function install {
     install_tls_certificates "$path" "$user" "$ca_file_path" "$cert_file_path" "$key_file_path"
   fi
 
-  if command -v consul; then
+  # This command is run with sudo rights so that it will succeed in cases where image hardening alters the permissions
+  # on the directories where Consul may be installed. See https://github.com/hashicorp/terraform-aws-consul/issues/210.
+  if sudo -E PATH=$PATH bash -c "command -v consul"; then
     log_info "Consul install complete!";
   else
     log_info "Could not find consul command. Aborting.";