Description of problem:
When running ovirt-log-collector in a machine without enough disk space, we get a error message (about the issue), but the incomplete log file (that didn't fit the disk) is not automatically deleted. The user needs to delete it manually.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Run ovirt-log-collector in a disk without enough disk space for it;
2. Get the error message.
Incomplete log file in the disk.
Get a message asking if the user wants to delete the file (Y as default) and delete the incomplete log file after if user confirms.