feat-reorder commands

Closes #19

See merge request !42

Avoid vol detach while the server is still powering off

refactor steps before vol snapshot

Closes #17

See merge request !41

Update prod pipeline

See merge request !35

This is done so we can directly use it to instantiate a server with volume copy.
Removed code that becomes obsolete when this approach of creating a server with
volume copy is implemented.

Remove code that destroys TF resources after failure

See merge request !39

TF apply failure leads to pipeline exiting so TF destroy doesn't run

fix regex to capture latest image to be used

See merge request rc/terraform-openstack!38

Workaround the issue of having duplicate names for snapshot failing the TF deploy pipelines

See merge request !36