Summary
Question
To make use of TLS offloading, you need to edit the Tomcat server.xml file to include the following line that is a configuration for 'Remote IP Valve' provided by Tomcat as written in https://docs.microfocus.com/itom/Operations_Orchestration:2019.11/DeploymentArchitecture.
<valve classname="org.apache.catalina.valves.RemoteIpValve" protocolheader="X-Forwarded-Proto">
However it might not work in a certain environment.
Answer
In such a case, try to add 'httpsServerPort' attribute and set an https port used by Central(Tomcat) to it.
<Valve className="org.apache.catalina.valves.RemoteIpValve" protocolHeader="X-Forwarded-Proto" httpsServerPort="8443" />
See https://tomcat.apache.org/tomcat-9.0-doc/config/valve.html#Remote_IP_Valve for more details about the attribute and others.