Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Description of problem:
Registration of CentOS 8 & RHEL 8 hosts that are already subscribed to another instance (or to cloud) fails with following error:
```
Unregistering from: satellite.example.com
Unable to verify server's identity: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:897)
```

Version-Release number of selected component (if applicable):
6.10

How reproducible:
* CentOS 8 and RHEL 8 only that are already subscribed somewhere else

Steps to Reproduce:
1. Try to register already subscribed CentOS 8 / RHEL 8 machine


Actual results:
Registration fails with error:
```
Unregistering from: satellite.example.com
Unable to verify server's identity: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:897)
```

Expected results:
Machine successfully registered.

Additional info:
Registration template should run `subscription-manager clean` command when `--force` parameter is `true`

Created redmine issue https://projects.theforeman.org/issues/33540 from this bug

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: Satellite 6.10 Release), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:4702