There should be a way for users to override the unavailable kernel modules (kmods) exit so that they can convert. This would lead to an unsupported conversion unless CEE stated otherwise in a customer support case

Acceptance criteria

• Environment variable CONVERT2RHEL_UNSUPPORTED_UNCHECKED_KMODS is added as an option, or better worded variable name
• Logging errors are replaced with warnings when environment variable is used
• Log message is updated to mention environment variable and what it implies (skips check exiting c2r, and it is an unsupported conversion. See reference for how we do it elsewhere[1])
• Log message is added about the check not throwing an error if it would otherwise have done it

[1] https://github.com/oamg/convert2rhel/blob/7b40f59d1516cd6f01c95dd164d7157f7c0bcec2/convert2rhel/utils.py#L487-L501