Add capability methods for remote server

lib/vagrant/machine/remote.rb

@@ -371,7 +371,8 @@ module Vagrant
       end
 
       def synced_folders
-        self.class.synced_folders(self)
+        # self.class.synced_folders(self)
+        client.synced_folders
       end
 
       def to_proto

lib/vagrant/plugin/v2/synced_folder/remote.rb

@@ -14,6 +14,7 @@ module Vagrant
           end
 
           def _initialize(machine, synced_folder_type)
+            @client = nil#TODO!
             self
           end
 
@@ -54,6 +55,29 @@ module Vagrant
           def cleanup(machine, opts)
             client.cleanup(machine.to_proto, opts)
           end
+
+          # Executes the capability with the given name, optionally passing more
+          # arguments onwards to the capability. If the capability returns a value,
+          # it will be returned.
+          #
+          # @param [Symbol] cap_name Name of the capability
+          def capability(cap_name, *args)
+            @logger.debug("running remote host capability #{cap_name} with args #{args}")
+            client.capability(cap_name, *args)
+          end
+
+          # Tests whether the given capability is possible.
+          #
+          # @param [Symbol] cap_name Capability name
+          # @return [Boolean]
+          def capability?(cap_name)
+            @logger.debug("checking for remote host capability #{cap_name}")
+            client.has_capability?(cap_name)
+          end
+
+          def to_proto
+            client.proto
+          end
         end
       end
     end