vendor: update all dependencies to latest versions

vendor/gopkg.in/yaml.v2/README.md

@@ -67,6 +67,8 @@ b:
   d: [3, 4]
 `
 
+// Note: struct fields must be public in order for unmarshal to
+// correctly populate the data.
 type T struct {
         A string
         B struct {

vendor/gopkg.in/yaml.v2/decode.go

@@ -251,7 +251,7 @@ func (d *decoder) callUnmarshaler(n *node, u Unmarshaler) (good bool) {
 //
 // If n holds a null value, prepare returns before doing anything.
 func (d *decoder) prepare(n *node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) {
-	if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "" && n.implicit) {
+	if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "~" || n.value == "" && n.implicit) {
 		return out, false, false
 	}
 	again := true
@@ -641,7 +641,7 @@ func (d *decoder) mappingStruct(n *node, out reflect.Value) (good bool) {
 			d.unmarshal(n.children[i+1], value)
 			inlineMap.SetMapIndex(name, value)
 		} else if d.strict {
-			d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in struct %s", n.line+1, name.String(), out.Type()))
+			d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in struct %s", ni.line+1, name.String(), out.Type()))
 		}
 	}
 	return true

vendor/gopkg.in/yaml.v2/decode_test.go

@@ -438,6 +438,9 @@ var unmarshalTests = []struct {
 	{
 		"foo: ''",
 		map[string]*string{"foo": new(string)},
+	}, {
+		"foo: null",
+		map[string]*string{"foo": nil},
 	}, {
 		"foo: null",
 		map[string]string{"foo": ""},
@@ -446,6 +449,18 @@ var unmarshalTests = []struct {
 		map[string]interface{}{"foo": nil},
 	},
 
+	// Support for ~
+	{
+		"foo: ~",
+		map[string]*string{"foo": nil},
+	}, {
+		"foo: ~",
+		map[string]string{"foo": ""},
+	}, {
+		"foo: ~",
+		map[string]interface{}{"foo": nil},
+	},
+
 	// Ignored field
 	{
 		"a: 1\nb: 2\n",
@@ -984,7 +999,7 @@ func (s *S) TestUnmarshalStrict(c *C) {
 	err = yaml.Unmarshal([]byte("a: 1\nb: 2\nc: 3"), &v)
 	c.Check(err, IsNil)
 	err = yaml.UnmarshalStrict([]byte("a: 1\nb: 2\nc: 3"), &v)
-	c.Check(err, ErrorMatches, "yaml: unmarshal errors:\n  line 1: field c not found in struct struct { A int; B int }")
+	c.Check(err, ErrorMatches, "yaml: unmarshal errors:\n  line 3: field c not found in struct struct { A int; B int }")
 }
 
 //var data []byte

vendor/gopkg.in/yaml.v2/emitterc.go

@@ -995,9 +995,9 @@ func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
 		space_break    = false
 
 		preceded_by_whitespace = false
-		followed_by_whitespace  = false
-		previous_space          = false
-		previous_break          = false
+		followed_by_whitespace = false
+		previous_space         = false
+		previous_break         = false
 	)
 
 	emitter.scalar_data.value = value

vendor/gopkg.in/yaml.v2/example_embedded_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"log"
 
-        "gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v2"
 )
 
 // An example showing how to unmarshal embedded
@@ -17,8 +17,8 @@ type StructA struct {
 type StructB struct {
 	// Embedded structs are not treated as embedded in YAML by default. To do that,
 	// add the ",inline" annotation below
-	StructA   `yaml:",inline"`
-	B string `yaml:"b"`
+	StructA `yaml:",inline"`
+	B       string `yaml:"b"`
 }
 
 var data = `
@@ -31,11 +31,11 @@ func ExampleUnmarshal_embedded() {
 
 	err := yaml.Unmarshal([]byte(data), &b)
 	if err != nil {
-		log.Fatal("cannot unmarshal data: %v", err)
+		log.Fatalf("cannot unmarshal data: %v", err)
 	}
-        fmt.Println(b.A)
-        fmt.Println(b.B)
-        // Output:
-        // a string from struct A
-        // a string from struct B
+	fmt.Println(b.A)
+	fmt.Println(b.B)
+	// Output:
+	// a string from struct A
+	// a string from struct B
 }

vendor/gopkg.in/yaml.v2/yaml.go

@@ -140,7 +140,7 @@ func unmarshal(in []byte, out interface{}, strict bool) (err error) {
 // For example:
 //
 //     type T struct {
-//         F int "a,omitempty"
+//         F int `yaml:"a,omitempty"`
 //         B int
 //     }
 //     yaml.Marshal(&T{B: 2}) // Returns "b: 2\n"