Cachier does not resolve provisioners with Vagrant 1.7.1

[Yserz]

Due to a modification in Vagrant 1.7.1 or earlier cachier does not resolve provisioners correctly anymore. Thus for example the chef caching is broken.

The bug applies for example here:
https://github.com/fgrehm/vagrant-cachier/blob/master/lib/vagrant-cachier/cap/linux/chef_file_cache_path.rb

The vagrant-butcher plugin created by @cassianoleal already solved this bug here:
c10l/vagrant-butcher@81cc73c

[tknerr]

See also:
hashicorp/vagrant#5069