Implement a new automated test to cover this behaviour.

Proposed test steps:

1. Setup proxy in the host ( https://access.redhat.com/support/cases/#/case/03737715/discussion?commentId=a0a6R00000WD3mKQAT) 
2. Install subscription-manager, rhc, rhc-worker-script, insights-client
3. Remove /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release (the analysis script executed by the rhc-worker-script should be able to download the file under the hood.)
4. Run rhc connect with given credentials to subscribe the machine and register to insights
5. Check that the host is visible as CentOS in the UI
6. Run the pre-conversion analysis task in the machine
7. Check the pre-conversion finished successfully and  /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release was downloaded
8. Run the conversion analysis task
9. Verify the conversion finished successfully