Unable to undeploy a deployment in progress from Alien4Cloud

[adidanes]

Bug Report

Description

Unable to undeploy a deployment in progress from Alien4Cloud

Expected behavior

During the deployment of an application, user could need to stop progress and undeploy.

Actual behavior

In Alien4Cloud, after starting a Deploy operation, during status Deployment in prrogress, if user launches Undeploy, the application status pass in Failed, A4C prints Undeployment in progress for ever, application is stucked.
The application can be deployed only by Yorc CLI command.
I noticed with a multi node application (elk-basic) that compute instances on GCP may rest (not deleted by undeploy) if -p flag (purge) is not used.

Additional environment details (infrastructure implied: AWS, OpenStack, etc.)

Issue happens when deploying to GCP
Deploy / Undeploy of the test applicaion (elk-basic) on OpenStack succeded, but one of the compute instances was not deleted by the Undeploy (Compute_KBN node ; it seems to me that this node instance has not completed createing when the workflow was cancelled:
....Compute_KBN-0-ConnectionCheck: Still creating... (10s elapsed)
...

Priority

Low