Severity "lost" when importing a Qualys Scan

[nv-pipo]

Bug description When trying to import import a "Qualys Scan" (Qualys VMDR) the severity is lost because the mapping (dict) is expecting an int. Xml's parser returns a string (findtext), so it needs to be converted to int.

Please approve PR: https://github.com/DefectDojo/django-DefectDojo/pull/10205

Basically, it's just a cast from string to int.

Steps to reproduce Steps to reproduce the behavior:

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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Deployment method (select with an X)

• [ ] Docker Compose
• [ ] Kubernetes
• [ ] GoDojo

Environment information

• Operating System: [e.g. Ubuntu 18.04]
• DefectDojo version (see footer) or commit message: [use git show -s --format="[%ci] %h: %s [%d]"]

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