Trim drive letter prefix from path

Fixes #9764

plugins/provisioners/chef/provisioner/chef_solo.rb

@@ -101,7 +101,8 @@ module VagrantPlugins
               # of a hack but is the most portable way I can think of at the moment
               # to achieve this. Otherwise, Vagrant attempts to share at some crazy
               # path like /home/vagrant/c:/foo/bar
-              remote_path = File.expand_path(path.gsub(/^[a-zA-Z]:\//, "/"), guest_provisioning_path.gsub(/^[a-zA-Z]:\//, "/"))
+              remote_path = File.expand_path(path.sub(/^[a-zA-Z]:\//, "/"), guest_provisioning_path.sub(/^[a-zA-Z]:\//, "/"))
+              remote_path.sub!(/^[a-zA-Z]:\//, "/")
             end
 
             # If we have specified a folder name to append then append it
@@ -183,10 +184,10 @@ module VagrantPlugins
           )
 
           still_active = 259 #provisioner has asked chef to reboot
-          
+
           @config.attempts.times do |attempt|
             exit_status = 0
-            while exit_status == 0 || exit_status == still_active 
+            while exit_status == 0 || exit_status == still_active
               if @machine.guest.capability?(:wait_for_reboot)
                 @machine.guest.capability(:wait_for_reboot)
               elsif attempt > 0

test/unit/plugins/provisioners/chef/provisioner/chef_solo_test.rb

@@ -23,12 +23,22 @@ describe VagrantPlugins::Chef::Provisioner::ChefSolo do
   end
 
   describe "#expanded_folders" do
+    before { allow(subject).to receive(:windows?).and_return(true) }
+
     it "handles the default Windows provisioning path" do
       allow(config).to receive(:provisioning_path).and_return(nil)
-      allow(subject).to receive(:windows?).and_return(true)
       remote_path = subject.expanded_folders([[:vm, "cookbooks-1"]])[0][2]
       expect(remote_path).to eq("/vagrant-chef/cookbooks-1")
     end
+
+    it "removes drive letter prefix from path" do
+      allow(config).to receive(:provisioning_path).and_return(nil)
+      expect(File).to receive(:expand_path).and_return("C:/vagrant-chef/cookbooks-1")
+      result = subject.expanded_folders([[:vm, "cookbooks-1"]])
+      remote_path = result[0][2]
+      expect(remote_path).to eq("/vagrant-chef/cookbooks-1")
+    end
+
   end
 
   describe "#expanded_folders" do