Add maximum replicas per node support to stack version 3.8

cli/compose/convert/service.go

@@ -158,6 +158,7 @@ func Service(
  Placement: &swarm.Placement{
  Constraints: service.Deploy.Placement.Constraints,
  Preferences: getPlacementPreference(service.Deploy.Placement.Preferences),
+ MaxReplicas: service.Deploy.Placement.MaxReplicas,
  },
  },
  EndpointSpec: endpoint,

cli/compose/loader/full-example.yml

@@ -1,4 +1,4 @@
-version: "3.7"
+version: "3.8"
 
 services:
  foo:
@@ -82,6 +82,7 @@ services:
  window: 120s
  placement:
  constraints: [node=foo]
+ max_replicas_per_node: 5
  preferences:
  - spread: node.labels.az
  endpoint_mode: dnsrr

cli/compose/loader/full-struct_test.go

@@ -10,7 +10,7 @@ import (
 
 func fullExampleConfig(workingDir, homeDir string) *types.Config {
 	return &types.Config{
- Version: "3.7",
+ Version: "3.8",
  Services: services(workingDir, homeDir),
  Networks: networks(),
  Volumes: volumes(),
@@ -111,6 +111,7 @@ func services(workingDir, homeDir string) []types.ServiceConfig {
  },
  Placement: types.Placement{
  Constraints: []string{"node=foo"},
+ MaxReplicas: uint64(5),
  Preferences: []types.PlacementPreferences{
  {
  Spread: "node.labels.az",
@@ -507,7 +508,7 @@ func secrets(workingDir string) map[string]types.SecretConfig {
 }
 
 func fullExampleYAML(workingDir string) string {
-	return fmt.Sprintf(`version: "3.7"
+	return fmt.Sprintf(`version: "3.8"
 services:
  foo:
  build:
@@ -588,6 +589,7 @@ services:
  - node=foo
  preferences:
  - spread: node.labels.az
+ max_replicas_per_node: 5
  endpoint_mode: dnsrr
  devices:
  - /dev/ttyUSB0:/dev/ttyUSB0
@@ -1083,7 +1085,8 @@ func fullExampleJSON(workingDir string) string {
  {
  "spread": "node.labels.az"
  }
- ]
+ ],
+ "max_replicas_per_node": 5
  },
  "endpoint_mode": "dnsrr"
  },
@@ -1383,7 +1386,7 @@ func fullExampleJSON(workingDir string) string {
  "working_dir": "/code"
  }
  },
- "version": "3.7",
+ "version": "3.8",
  "volumes": {
  "another-volume": {
  "name": "user_specified_name",