It is currently only possible to configure a TLS profiles including supported ciphers in a custom profile with

https://docs.openshift.com/container-platform/4.12/security/tls-security-profiles.html#tls-profiles-ingress-configuring_tls-security-profiles 

But it is not possible to control the server signature algorithm.

Customer wants to disable specific "Server Signature Algorithm(s)" based on a security audit especially 
rsa_pkcs1_sha224
which is known to be weak.

There seems to be a property implemented in  https://www.haproxy.com/blog/announcing-haproxy-2-8#signing-algorithms-for-tls

that could work. 

We need similar config option in OpenShift.