provisioners/chef: work with restrictive umask [GH-2121]

CHANGELOG.md

@@ -6,6 +6,7 @@ BUG FIXES:
     Vagrantfile can cause errors.
   - core: `VAGRANT_VAGRANTFILE` env var only applies to the project
     Vagrantfile name. [GH-2130]
+  - provisioners/chef: Work even with restrictive umask on user. [GH-2121]
   - provisioners/puppet: No more "shared folders cannot be found" error.
     [GH-2134]
 

plugins/provisioners/chef/provisioner/chef_solo.rb

@@ -173,7 +173,7 @@ module VagrantPlugins
         def verify_shared_folders(folders)
           folders.each do |folder|
             @logger.debug("Checking for shared folder: #{folder}")
-            if !@machine.communicate.test("test -d #{folder}")
+            if !@machine.communicate.test("test -d #{folder}", sudo: true)
               raise ChefError, :missing_shared_folders
             end
           end