Use symbol proto when protoizing plugin configs

lib/vagrant/config/v2/dummy_config.rb

@@ -59,6 +59,8 @@ module Vagrant
         # @param type [String] a name to put into the type field, e.g. plugin name
         # @return [Hashicorp::Vagrant::Sdk::Vagrantfile::GeneralConfig]
         def to_proto(type)
+          mapper = VagrantPlugins::CommandServe::Mappers.new
+          
           protoize = self.instance_variables_hash
           protoize.delete_if{|k,v| k.start_with?("_") }
           config_struct = Google::Protobuf::Struct.from_hash(protoize)

plugins/kernel_v2/config/vm.rb

@@ -71,6 +71,9 @@ module VagrantPlugins
       def initialize
         @logger = Log4r::Logger.new("vagrant::config::vm")
 
+        # Mappers are used by functions that produce a proto
+        @mapper = VagrantPlugins::CommandServe::Mappers.new
+
         @allowed_synced_folder_types   = UNSET_VALUE
         @allow_fstab_modification      = UNSET_VALUE
         @base_mac                      = UNSET_VALUE
@@ -1065,12 +1068,11 @@ module VagrantPlugins
         vm_config.define_singleton_method(:compiled_provider_configs) do
           return @__compiled_provider_configs
         end
-      
+
         vm_config.compiled_provider_configs.each do |type, config|
           c = clean_up_config_object(config.instance_variables_hash)
-      
           provider_proto = PROVIDER_PROTO_CLS.new(type: type)
-          config_struct = Google::Protobuf::Struct.from_hash(c)
+          config_struct = @mapper.map(c, to: Hashicorp::Vagrant::Sdk::Args::Hash)
           config_any = Google::Protobuf::Any.pack(config_struct)
           provider_proto.config = config_any
           target << provider_proto
@@ -1088,7 +1090,7 @@ module VagrantPlugins
           network_proto = NETWORK_PROTO_CLS.new(type: type, id: opts.fetch(:id, ""))
           opts.delete(:id)
           opts.transform_keys!(&:to_s)
-          config_struct = Google::Protobuf::Struct.from_hash(opts)
+          config_struct = @mapper.map(opts, to: Hashicorp::Vagrant::Sdk::Args::Hash)
           config_any = Google::Protobuf::Any.pack(config_struct)
           network_proto.config = config_any
           target << network_proto
@@ -1124,7 +1126,7 @@ module VagrantPlugins
       
             sf_proto.send("#{opt.to_s}=", val)
           end
-          config_struct = Google::Protobuf::Struct.from_hash(config_opts)
+          config_struct = @mapper.map(config_opts, to: Hashicorp::Vagrant::Sdk::Args::Hash)
           config_any = Google::Protobuf::Any.pack(config_struct)
           sf_proto.config = config_any
           target << sf_proto

plugins/kernel_v2/config/vm_provisioner.rb

@@ -65,6 +65,7 @@ module VagrantPlugins
       def initialize(name, type, **options)
         @logger = Log4r::Logger.new("vagrant::config::vm::provisioner")
         @logger.debug("Provisioner defined: #{name}")
+        @mapper = VagrantPlugins::CommandServe::Mappers.new
 
         @id = name || SecureRandom.uuid
         @config  = nil
@@ -201,7 +202,7 @@ module VagrantPlugins
           begin
             if k == "config"
               protoize = clean_up_config_object(c.config.instance_variables_hash)
-              config_struct = Google::Protobuf::Struct.from_hash(protoize)
+              config_struct = mapper.map(protoize, to: Hashicorp::Vagrant::Sdk::Args::Hash)
               config_any = Google::Protobuf::Any.pack(config_struct)
               proto.config = config_any
               next