The centos/7 base image in the Vagrantfile does not container guest additions

[Paul Bourke]

If not using NFS for the shared folders, this results in:

Failed to mount folders in Linux guest. This is usually because
the "vboxsf" file system is not available. Please verify that
the guest additions are properly installed in the guest and
can work properly. The command attempted was:

mount -t vboxsf -o uid=`id -u vagrant`,gid=`getent group vagrant | cut -d: -f3` data_host /data/host
mount -t vboxsf -o uid=`id -u vagrant`,gid=`id -g vagrant` data_host /data/host

The error output from the last command was:

mount: unknown filesystem type 'vboxsf'

[OpenStack Infra (hudson-openstack)]

Change abandoned by Paul Bourke (<email address hidden>) on branch: master
Review: https://review.openstack.org/226289

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/227147
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=7e7ce85f77a65e39b2d5aa634ee5345fab7b0a15
Submitter: Jenkins
Branch: master

commit 7e7ce85f77a65e39b2d5aa634ee5345fab7b0a15
Author: Martin André <email address hidden>
Date: Fri Sep 25 18:47:57 2015 +0900

    Allow different defaults for different providers

    Change-Id: I63bf8d4d3c5d359e82f2cac47cfd4ad7ce500ccf
    Closes-Bug: #1498454
    Closes-Bug: #1498461
    Partially-Implements: blueprint vagrant-improvements