`leapp upgrade --resume` continues when error happens before

[pirat89]

Actual behavior
In case the execution is in the phase where leapp is expected to end (because a checkpoint is reached e.g.) AND an actor in this phase ends with error, the leapp upgrade --resume doesn't check the end of the previous run and continues with the next phase.

Note
We discovered that behaviour time ago but I do not see it report it anywhere. In case it is fixed, close the issue. It's possible that the issue can be seen in more cases than only the end of workflow because of reached checkpoint. To test the behaviour, try soething like (pseudocode):

modify an actor in specific phase which will raise an error, so workflow execution ends
leapp upgrade --debug
leapp upgrade --resume

Expected solution
The workflow execution stops because of the previous error.