I just tried to add a foreman instance as an external provider in the oVirt UI, but the connection test fails with "unknown error". In the engine.log I see this message:

2015-06-26 14:31:50,900 ERROR [org.ovirt.engine.core.bll.GetProviderCertificateChainQuery] (ajp--127.0.0.1-8702-3) Error in encoding certificate. Error is {} java.io.IOException: Keystore was tampered with, or password was incorrect

How can I successfully connect to Foreman?

The Foreman instance uses a self-signed certificate btw.  
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