[Live-demo] Update GeoMoose to 2.9.0

[Jim Klassen]

All,

In response to the Kicking off OSGeo-Live 10.0 build process, was
thinking it would be good to update the installed version of GeoMoose to
the current stable version.  But, it looks like things have changed a
bit since the last time I updated the GeoMoose installer for OSGeo-Live. 

What is the current process for updating GeoMoose from 2.8.0 to 2.9.0?

Jim Klassen