Display created machine ID

[cardil]

It would be good enhancement to log out a machine ID after it was created, even while machine is still spawning. It might be useful for debugging on CI environments when each machine has the same name.

A log of something like this:

==> default: Launching a server with the following settings...
==> default:  -- Tenant          : 
==> default:  -- Name            : gitlab-ci-jenkins-slave
==> default:  -- Ref             : 3097a1ee-699a-4c4b-af43-09788452df53
==> default:  -- Flavor          : t2.medium
==> default:  -- FlavorRef       : 15f9e656-1abe-463c-91b7-099cc94a0b29
==> default:  -- Image           : CentOS8-ansible
==> default:  -- ImageRef        : 892d67f0-1a4f-436f-a8f9-2cac4da19c65
==> default:  -- KeyPair         : vagrant-generated-zh8h5yba
==> default:  -- Network         : 55bb7eb3-2b6a-4586-bb13-d7814174e6f7