docker-machine

Create tags on spot instance after instance creation

Fixes https://gitlab.com/gitlab-org/ci-cd/docker-machine/-/issues/112

See merge request https://gitlab.com/gitlab-org/ci-cd/docker-machine/-/merge_requests/110



Merged-by: Axel von Bertoldi <avonbertoldi@gitlab.com>
Approved-by: Romuald Atchadé <ratchade@gitlab.com>