synced_folders/rsync: set chmod flag by default on Windows [GH-3256]

CHANGELOG.md

@@ -36,6 +36,7 @@ BUG FIXES:
   - providers/virtualbox: Host-only networks set cableconnected property
       to "yes" [GH-3365]
   - provisioners/docker: Use proper flags for 0.9. [GH-3356]
+  - synced\_folders/rsync: Set chmod flag by default on Windows. [GH-3256]
   - synced\_folders/smb: IDs of synced folders are hashed to work better
       with VMware. [GH-3219]
   - synced\_folders/smb: Properly remove existing folders with the

plugins/synced_folders/rsync/helper.rb

@@ -72,6 +72,11 @@ module VagrantPlugins
         args = Array(opts[:args]) if opts[:args]
         args ||= ["--verbose", "--archive", "--delete", "-z"]
 
+        # On Windows, we have to set the chmod flag to avoid permission issues
+        if Vagrant::Util::Platform.windows?
+          args << "--chmod=ugo=rwX"
+        end
+
         # Build up the actual command to execute
         command = [
           "rsync",