Support precompilation for <jsp-file> on startup when <load-on-startup> is set

Given the following in web.xml:

index
/index.jsp
0

The index.jsp file should be precompiled when the JspServlet goes into service.

However, this jasper implementation does not seem to support that. By contrast, the Tomcat jasper version does support it, using init-params to the JspServlet to pass in the uris of jsp-files to be precompiled on startup.

This is tracked in the jetty issue tracker here: [https://bugs.eclipse.org/bugs/show_bug.cgi?id=367680](https://bugs.eclipse.org/bugs/show_bug.cgi?id=367680)
#### Affected Versions
[current]