Bug fix: '/etc/apache2/site.d' requires Apache
Bug fix: '/etc/apache2/site.d' requires Apache

This patch ensure Apache is installed before trying to create '/etc/apache2'
sub-directories, fixing a bug I introduced in I7786f096a.

Change-Id: Id4786c5c80721c6c9a75875c4d2fb720d95f0237

wikimedia/mediawiki-vagrant,physikerwelt/DRMF-vagrant,physikerwelt/DRMF-vagrant,stuartbman/mediawiki-vagrant,ankita-kumari/mediawiki-vagrant,HarriAlasi/wiki3dviewer,ankita-kumari/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,huit/mediawiki-vagrant,physikerwelt/DRMF-vagrant,HarriAlasi/wiki3dviewer,huit/mediawiki-vagrant,wikimedia/mediawiki-vagrant,huit/mediawiki-vagrant,huit/mediawiki-vagrant,HarriAlasi/wiki3dviewer,wikimedia/mediawiki-vagrant,ankita-kumari/mediawiki-vagrant,stuartbman/mediawiki-vagrant,HarriAlasi/wiki3dviewer,huit/mediawiki-vagrant,stuartbman/mediawiki-vagrant,stuartbman/mediawiki-vagrant,ankita-kumari/mediawiki-vagrant,HarriAlasi/wiki3dviewer,physikerwelt/DRMF-vagrant,wikimedia/mediawiki-vagrant,stuartbman/mediawiki-vagrant,ankita-kumari/mediawiki-vagrant,HarriAlasi/wiki3dviewer,stuartbman/mediawiki-vagrant,ankita-kumari/mediawiki-vagrant,stuartbman/mediawiki-vagrant,HarriAlasi/wiki3dviewer