Update traefik dependencies (docker/docker and related) (#1823)

Update traefik dependencies (docker/docker and related)

- Update dependencies
- Fix compilation problems
- Remove vdemeester/docker-events (in docker api now)
- Remove `integration/vendor`
- Use `testImport`
- update some deps.
- regenerate the lock from scratch (after a `glide cc`)

vendor/github.com/docker/libcompose/config/schema_helpers.go

@@ -0,0 +1,105 @@
+package config
+
+import (
+	"encoding/json"
+	"strings"
+
+	"github.com/docker/go-connections/nat"
+	"github.com/xeipuuv/gojsonschema"
+)
+
+var (
+	schemaLoaderV1           gojsonschema.JSONLoader
+	constraintSchemaLoaderV1 gojsonschema.JSONLoader
+	schemaLoaderV2           gojsonschema.JSONLoader
+	constraintSchemaLoaderV2 gojsonschema.JSONLoader
+	schemaV1                 map[string]interface{}
+	schemaV2                 map[string]interface{}
+)
+
+func init() {
+	if err := setupSchemaLoaders(schemaDataV1, &schemaV1, &schemaLoaderV1, &constraintSchemaLoaderV1); err != nil {
+		panic(err)
+	}
+
+	if err := setupSchemaLoaders(servicesSchemaDataV2, &schemaV2, &schemaLoaderV2, &constraintSchemaLoaderV2); err != nil {
+		panic(err)
+	}
+}
+
+type (
+	environmentFormatChecker struct{}
+	portsFormatChecker       struct{}
+)
+
+func (checker environmentFormatChecker) IsFormat(input string) bool {
+	// If the value is a boolean, a warning should be given
+	// However, we can't determine type since gojsonschema converts the value to a string
+	// Adding a function with an interface{} parameter to gojsonschema is probably the best way to handle this
+	return true
+}
+
+func (checker portsFormatChecker) IsFormat(input string) bool {
+	_, _, err := nat.ParsePortSpecs([]string{input})
+	return err == nil
+}
+
+func setupSchemaLoaders(schemaData string, schema *map[string]interface{}, schemaLoader, constraintSchemaLoader *gojsonschema.JSONLoader) error {
+	if *schema != nil {
+		return nil
+	}
+
+	var schemaRaw interface{}
+	err := json.Unmarshal([]byte(schemaData), &schemaRaw)
+	if err != nil {
+		return err
+	}
+
+	*schema = schemaRaw.(map[string]interface{})
+
+	gojsonschema.FormatCheckers.Add("environment", environmentFormatChecker{})
+	gojsonschema.FormatCheckers.Add("ports", portsFormatChecker{})
+	gojsonschema.FormatCheckers.Add("expose", portsFormatChecker{})
+	*schemaLoader = gojsonschema.NewGoLoader(schemaRaw)
+
+	definitions := (*schema)["definitions"].(map[string]interface{})
+	constraints := definitions["constraints"].(map[string]interface{})
+	service := constraints["service"].(map[string]interface{})
+	*constraintSchemaLoader = gojsonschema.NewGoLoader(service)
+
+	return nil
+}
+
+// gojsonschema doesn't provide a list of valid types for a property
+// This parses the schema manually to find all valid types
+func parseValidTypesFromSchema(schema map[string]interface{}, context string) []string {
+	contextSplit := strings.Split(context, ".")
+	key := contextSplit[len(contextSplit)-1]
+
+	definitions := schema["definitions"].(map[string]interface{})
+	service := definitions["service"].(map[string]interface{})
+	properties := service["properties"].(map[string]interface{})
+	property := properties[key].(map[string]interface{})
+
+	var validTypes []string
+
+	if val, ok := property["oneOf"]; ok {
+		validConditions := val.([]interface{})
+
+		for _, validCondition := range validConditions {
+			condition := validCondition.(map[string]interface{})
+			validTypes = append(validTypes, condition["type"].(string))
+		}
+	} else if val, ok := property["$ref"]; ok {
+		reference := val.(string)
+		if reference == "#/definitions/string_or_list" {
+			return []string{"string", "array"}
+		} else if reference == "#/definitions/list_of_strings" {
+			return []string{"array"}
+		} else if reference == "#/definitions/list_or_dict" {
+			return []string{"array", "object"}
+		}
+	}
+
+	return validTypes
+}