api: use weak imports for plugin protobufs

Because of a side-effect import, we have the possibility of pulling in
several unnecessary packages that are used by the plugin and not at
runtime to implement protobuf structures. Setting these imports to
`weak` prevents this from happening, reducing the total import set,
reducing memory usage and binary size.

Signed-off-by: Stephen J Day <stephen.day@docker.com>

api/events/container.pb.go

@@ -43,9 +43,10 @@ package events
 import proto "github.com/gogo/protobuf/proto"
 import fmt "fmt"
 import math "math"
-import _ "github.com/gogo/protobuf/gogoproto"
-import google_protobuf1 "github.com/gogo/protobuf/types"
-import _ "github.com/containerd/containerd/protobuf/plugin"
+import google_protobuf "github.com/gogo/protobuf/types"
+
+// skipping weak import gogoproto "github.com/gogo/protobuf/gogoproto"
+// skipping weak import containerd_plugin "github.com/containerd/containerd/protobuf/plugin"
 
 import github_com_containerd_typeurl "github.com/containerd/typeurl"
 
@@ -77,8 +78,8 @@ func (*ContainerCreate) ProtoMessage()               {}
 func (*ContainerCreate) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{0} }
 
 type ContainerCreate_Runtime struct {
-	Name    string                `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	Options *google_protobuf1.Any `protobuf:"bytes,2,opt,name=options" json:"options,omitempty"`
+	Name    string               `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Options *google_protobuf.Any `protobuf:"bytes,2,opt,name=options" json:"options,omitempty"`
 }
 
 func (m *ContainerCreate_Runtime) Reset()      { *m = ContainerCreate_Runtime{} }
@@ -466,7 +467,7 @@ func (this *ContainerCreate_Runtime) String() string {
 	}
 	s := strings.Join([]string{`&ContainerCreate_Runtime{`,
 		`Name:` + fmt.Sprintf("%v", this.Name) + `,`,
-		`Options:` + strings.Replace(fmt.Sprintf("%v", this.Options), "Any", "google_protobuf1.Any", 1) + `,`,
+		`Options:` + strings.Replace(fmt.Sprintf("%v", this.Options), "Any", "google_protobuf.Any", 1) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -738,7 +739,7 @@ func (m *ContainerCreate_Runtime) Unmarshal(dAtA []byte) error {
 				return io.ErrUnexpectedEOF
 			}
 			if m.Options == nil {
-				m.Options = &google_protobuf1.Any{}
+				m.Options = &google_protobuf.Any{}
 			}
 			if err := m.Options.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
@@ -1209,31 +1210,31 @@ func init() {
 }
 
 var fileDescriptorContainer = []byte{
-	// 411 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x92, 0xcf, 0xaa, 0xd3, 0x40,
-	0x14, 0xc6, 0x3b, 0x49, 0x6d, 0x71, 0x22, 0xa8, 0x43, 0x91, 0x98, 0x45, 0xac, 0x5d, 0x55, 0x17,
-	0x13, 0x88, 0x1b, 0xb5, 0x1b, 0x6d, 0xab, 0x20, 0x2a, 0x48, 0xc0, 0x8d, 0x1b, 0x99, 0x34, 0xd3,
-	0x74, 0x30, 0x99, 0x09, 0xc9, 0xa4, 0x90, 0x9d, 0x8f, 0xe2, 0xe3, 0x74, 0xe9, 0xc2, 0x85, 0x2b,
-	0xb1, 0x01, 0xdf, 0xc0, 0x07, 0x90, 0xcc, 0x34, 0x6d, 0xf0, 0x72, 0xef, 0xa5, 0xab, 0x9c, 0x3f,
-	0xdf, 0x97, 0x73, 0x7e, 0x87, 0x81, 0xb3, 0x98, 0xc9, 0x4d, 0x19, 0xe2, 0x95, 0x48, 0xbd, 0x95,
-	0xe0, 0x92, 0x30, 0x4e, 0xf3, 0xa8, 0x1b, 0x92, 0x8c, 0x79, 0x74, 0x4b, 0xb9, 0x2c, 0x4e, 0x55,
-	0x9c, 0xe5, 0x42, 0x0a, 0x74, 0xf7, 0x24, 0xc3, 0x5a, 0xe2, 0x8c, 0x62, 0x11, 0x0b, 0xd5, 0xf5,
-	0x9a, 0x48, 0x0b, 0x9d, 0xfb, 0xb1, 0x10, 0x71, 0x42, 0x3d, 0x95, 0x85, 0xe5, 0xda, 0x23, 0xbc,
-	0x3a, 0xb4, 0x5e, 0x5c, 0xbb, 0xc0, 0xd1, 0x94, 0x25, 0x65, 0xcc, 0xb8, 0xb7, 0x66, 0x34, 0x89,
-	0x32, 0x22, 0x37, 0xfa, 0x0f, 0x93, 0x1f, 0x00, 0xde, 0x5e, 0xb4, 0xf2, 0x45, 0x4e, 0x89, 0xa4,
-	0xe8, 0x1e, 0x34, 0x58, 0x64, 0x83, 0x31, 0x98, 0xde, 0x9c, 0x0f, 0xea, 0x5f, 0x0f, 0x8c, 0x37,
-	0xcb, 0xc0, 0x60, 0x11, 0x1a, 0xc1, 0x1b, 0x2c, 0x25, 0x31, 0xb5, 0x8d, 0xa6, 0x15, 0xe8, 0x04,
-	0x2d, 0xe1, 0x30, 0x2f, 0xb9, 0x64, 0x29, 0xb5, 0xcd, 0x31, 0x98, 0x5a, 0xfe, 0x63, 0x7c, 0x81,
-	0x0c, 0xff, 0x37, 0x02, 0x07, 0xda, 0x11, 0xb4, 0x56, 0xe7, 0x3d, 0x1c, 0x1e, 0x6a, 0x08, 0xc1,
-	0x3e, 0x27, 0x29, 0xd5, 0x0b, 0x04, 0x2a, 0x46, 0x18, 0x0e, 0x45, 0x26, 0x99, 0xe0, 0x85, 0x1a,
-	0x6e, 0xf9, 0x23, 0xac, 0xaf, 0x82, 0x5b, 0x40, 0xfc, 0x92, 0x57, 0x41, 0x2b, 0x9a, 0xfc, 0xe9,
-	0x62, 0x7d, 0xcc, 0xa2, 0xf3, 0xb1, 0x5e, 0xc3, 0x41, 0x42, 0x42, 0x9a, 0x14, 0xb6, 0x39, 0x36,
-	0xa7, 0x96, 0x8f, 0xaf, 0xa2, 0xd2, 0x13, 0xf0, 0x3b, 0x65, 0x78, 0xc5, 0x65, 0x5e, 0x05, 0x07,
-	0x37, 0x7a, 0x08, 0x6f, 0x15, 0x9c, 0x64, 0xc5, 0x46, 0xc8, 0xcf, 0x5f, 0x68, 0x65, 0xf7, 0xd5,
-	0x10, 0xab, 0xad, 0xbd, 0xa5, 0x95, 0xf3, 0x0c, 0x5a, 0x1d, 0x27, 0xba, 0x03, 0xcd, 0x46, 0xa8,
-	0xf1, 0x9b, 0xb0, 0xd9, 0x70, 0x4b, 0x92, 0xf2, 0xb8, 0xa1, 0x4a, 0x9e, 0x1b, 0x4f, 0xc1, 0xe4,
-	0x51, 0x07, 0x73, 0x49, 0x13, 0x7a, 0x39, 0xe6, 0xfc, 0xc3, 0x6e, 0xef, 0xf6, 0x7e, 0xee, 0xdd,
-	0xde, 0xd7, 0xda, 0x05, 0xbb, 0xda, 0x05, 0xdf, 0x6b, 0x17, 0xfc, 0xae, 0x5d, 0xf0, 0xed, 0xaf,
-	0x0b, 0x3e, 0xf9, 0x67, 0x3c, 0xe5, 0x99, 0xfe, 0x84, 0x03, 0x75, 0xfb, 0x27, 0xff, 0x02, 0x00,
-	0x00, 0xff, 0xff, 0xc4, 0x03, 0x7d, 0xc8, 0x07, 0x03, 0x00, 0x00,
+	// 413 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x92, 0xc1, 0x0a, 0xd3, 0x30,
+	0x18, 0xc7, 0x97, 0x76, 0x6e, 0x98, 0x0a, 0x6a, 0x18, 0x52, 0x7b, 0xa8, 0x73, 0xa7, 0xe9, 0x21,
+	0x85, 0x7a, 0x51, 0x77, 0xd1, 0x6d, 0x0a, 0xa2, 0x82, 0x14, 0x84, 0xe1, 0x45, 0xd2, 0x35, 0xeb,
+	0x82, 0x6d, 0x52, 0xda, 0x74, 0xd0, 0x9b, 0x8f, 0xe2, 0xe3, 0xec, 0xe8, 0xc1, 0x83, 0x27, 0x71,
+	0x05, 0xdf, 0xc0, 0x07, 0x90, 0x26, 0xeb, 0x56, 0x14, 0x95, 0x9d, 0xfa, 0xcf, 0xd7, 0xff, 0x3f,
+	0xdf, 0xf7, 0xfb, 0x08, 0x9c, 0xc5, 0x4c, 0x6e, 0xcb, 0x10, 0xaf, 0x45, 0xea, 0xad, 0x05, 0x97,
+	0x84, 0x71, 0x9a, 0x47, 0x5d, 0x49, 0x32, 0xe6, 0xd1, 0x1d, 0xe5, 0xb2, 0x38, 0x57, 0x71, 0x96,
+	0x0b, 0x29, 0xd0, 0xcd, 0xb3, 0x0d, 0x6b, 0x8b, 0x73, 0x3b, 0x16, 0x22, 0x4e, 0xa8, 0xa7, 0x0c,
+	0x61, 0xb9, 0xf1, 0x08, 0xaf, 0xb4, 0xdb, 0x19, 0xc5, 0x22, 0x16, 0x4a, 0x7a, 0x8d, 0x3a, 0x56,
+	0x9f, 0xfc, 0x77, 0x80, 0xd3, 0x55, 0x59, 0x52, 0xc6, 0x8c, 0x7b, 0x1b, 0x46, 0x93, 0x28, 0x23,
+	0x72, 0xab, 0x6f, 0x98, 0x7c, 0x01, 0xf0, 0xfa, 0xa2, 0xb5, 0x2f, 0x72, 0x4a, 0x24, 0x45, 0xb7,
+	0xa0, 0xc1, 0x22, 0x1b, 0x8c, 0xc1, 0xf4, 0xea, 0x7c, 0x50, 0x7f, 0xbb, 0x63, 0xbc, 0x58, 0x06,
+	0x06, 0x8b, 0xd0, 0x08, 0x5e, 0x61, 0x29, 0x89, 0xa9, 0x6d, 0x34, 0xbf, 0x02, 0x7d, 0x40, 0x4b,
+	0x38, 0xcc, 0x4b, 0x2e, 0x59, 0x4a, 0x6d, 0x73, 0x0c, 0xa6, 0x96, 0x7f, 0x1f, 0xff, 0x41, 0x86,
+	0x7f, 0x6b, 0x81, 0x03, 0x9d, 0x08, 0xda, 0xa8, 0xf3, 0x1a, 0x0e, 0x8f, 0x35, 0x84, 0x60, 0x9f,
+	0x93, 0x94, 0xea, 0x01, 0x02, 0xa5, 0x11, 0x86, 0x43, 0x91, 0x49, 0x26, 0x78, 0xa1, 0x9a, 0x5b,
+	0xfe, 0x08, 0xeb, 0x5d, 0xe1, 0x16, 0x10, 0x3f, 0xe5, 0x55, 0xd0, 0x9a, 0x26, 0x3f, 0xba, 0x58,
+	0x6f, 0xb3, 0xe8, 0x72, 0xac, 0xe7, 0x70, 0x90, 0x90, 0x90, 0x26, 0x85, 0x6d, 0x8e, 0xcd, 0xa9,
+	0xe5, 0xe3, 0x7f, 0x51, 0xe9, 0x0e, 0xf8, 0x95, 0x0a, 0x3c, 0xe3, 0x32, 0xaf, 0x82, 0x63, 0x1a,
+	0xdd, 0x85, 0xd7, 0x0a, 0x4e, 0xb2, 0x62, 0x2b, 0xe4, 0xfb, 0x0f, 0xb4, 0xb2, 0xfb, 0xaa, 0x89,
+	0xd5, 0xd6, 0x5e, 0xd2, 0xca, 0x79, 0x04, 0xad, 0x4e, 0x12, 0xdd, 0x80, 0x66, 0x63, 0xd4, 0xf8,
+	0x8d, 0x6c, 0x26, 0xdc, 0x91, 0xa4, 0x3c, 0x4d, 0xa8, 0x0e, 0x8f, 0x8d, 0x87, 0x60, 0x72, 0xaf,
+	0x83, 0xb9, 0xa4, 0x09, 0xfd, 0x3b, 0xe6, 0xfc, 0xcd, 0xfe, 0xe0, 0xf6, 0xbe, 0x1e, 0xdc, 0xde,
+	0xc7, 0xda, 0x05, 0xfb, 0xda, 0x05, 0x9f, 0x6b, 0x17, 0x7c, 0xaf, 0x5d, 0xf0, 0xe9, 0xa7, 0x0b,
+	0xde, 0xf9, 0x17, 0x3c, 0xe5, 0x99, 0xfe, 0xac, 0xc0, 0xca, 0x08, 0x07, 0x6a, 0xff, 0x0f, 0x7e,
+	0x05, 0x00, 0x00, 0xff, 0xff, 0xf5, 0x09, 0xe0, 0xd6, 0x0b, 0x03, 0x00, 0x00,
 }