Description of problem:

Capsule sync of Capsule migrated from RHEL8 to RHEL9 via backup/restore fails with the following error:

Error:Faraday::ConnectionFailedNo route to host - connect(2) for 10.37.195.110:443 (Errno::EHOSTUNREACH) 

even though DNS entry for the the Capusle server hostname has been updated to point to the IP address of the new RHEL9 Capsule server.

How reproducible:

Once

Is this issue a regression from an earlier version:

Not sure.

Steps to Reproduce:

1. Build a new Capsule server (with different hostname than the existing Capsule) on RHEL9.
2. Perform full offline backup of existing Capsule server.
3. Using `satellite-change-hostname`, change the hostname of the new RHEL9 Capsule to match the hostname of the existing RHEL8 Capsule.
4. Shut down the source RHEL8 Capsule.
5. Restore the full backup on the target RHEL9 Capsule.
6. Verify that all Satellite services are up and running after the restoration.
7. Modify the DNS entry of the Capsule so that the hostname points to the new IP address of the Capsule.
8. Perform Capsule sync.

Actual behavior:

Capsule sync fails pointing to the IP address of the old RHEL8 Capsule (as described above).

Expected behavior:

Capsule sync should not try to access the IP address of the old RHEL8 Capsule server after it has been migrated to a new RHEL9 machine.

Business Impact / Additional info: