Group together properties related to Tomcat's RemoteIpValve

[wilkinsona]

We have six properties that all relate to the configuration of Tomcat's RemoteIpValve:

• server.tomcat.host-header
• server.tomcat.internal-proxies
• server.tomcat.protocol-header
• server.tomcat.protocol-header-https-value
• server.tomcat.port-header
• server.tomcat.remote-ip-header

They aren't grouped and sit alongside several other properties related to various other areas of Tomcat (threading, connection handling, URI encoding, TLD scanning, etc.). This is becoming increasingly unwieldy. For example, we may want to provide configuration properties for RemoteIpValve's changeLocalName and changeLocalPort properties and naming them succinctly while making their purpose clear is harder than it needs to be at the moment.

[eddumelendez]

@wilkinsona I would like to take this one and may will work with a friend. Is this just about grouping the properties. I think they should be also backward compatible right?

[wilkinsona]

Yes, that's right. We should move the properties listed above into a new group in a way that is backwards compatible.

[eddumelendez]

thanks @wilkinsona! I will work on this with @manduinca

[manduinca]

Great @eddumelendez, let’s get to work.

[mbhave]

Closing in favor of PR #18489.