Avoid the media checking during the centos builds
Avoid the media checking during the centos builds

The default boot menu option is media check & install. If we arrow up first we get just the install option. This shaves a bit of time off the install.

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

devopxteam/bento,devopxteam/bento,norcams/bento,devopxteam/bento,b1-systems/bento,norcams/bento,b1-systems/bento,chef/bento,Oefenweb/bento,norcams/bento,devopxteam/bento,juliandunn/bento,Oefenweb/bento,chef/bento,juliandunn/bento,juliandunn/bento,chef/bento