[OSGeoLive] #2313: add installation of the guest addition to the documentation

[OSGeoLive]

#2313: add installation of the guest addition to the documentation
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 Reporter:  astrid_emde  |      Owner:  osgeolive@…
     Type:  task         |     Status:  new
 Priority:  normal       |  Milestone:
Component:  OSGeoLive    |   Keywords:
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 * https://trac.osgeo.org/osgeolive/ticket/2309
 * https://github.com/OSGeo/OSGeoLive/blob/master/bin/setup.sh#L96
 * https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1873922

 * add information here https://osgeo.github.io/OSGeoLive-
 doc/en/quickstart/virtualization_quickstart.html

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Ticket URL: <https://trac.osgeo.org/osgeolive/ticket/2313>
OSGeoLive <https://live.osgeo.org/>
self-contained bootable DVD, USB thumb drive or Virtual Machine based on Lubuntu, that allows you to try a wide variety of open source geospatial software without installing anything.