[eclipse-pmc] API request: Add "host" config parameter for Jetty

[Simon Kaegi <Simon_Kaegi@xxxxxxxxxx>]

By default when Jetty created an Http Server the service  will bind to all
available network adapters.
In some environments users want only to bind to select network adapters or
prevent remote access to their Http Server by binding to 127.0.0.1.
This functionality requires adding support for new "http.host" and
"https.host" config parameters.

GOALS/BENEFITS:
- standard building block for http support
- supports common use-case

CORRESPONDING BUG:
Add "host" support for config parameters for http.jetty
      https://bugs.eclipse.org/bugs/show_bug.cgi?id=180603

RELATED:
Eclipse Help should bind ServerSocket to 127.0.0.1 only
      https://bugs.eclipse.org/bugs/show_bug.cgi?id=180320

RISKS:
None.

PERFORMANCE IMPACTS:
- No impact