Resolve logrus and gojsonschema vendoring conflicts

Some vendoring is blocking other PR's due to changes to logrus (Sirupsen
vs sirupsen for lower-case) as well as a non-versioned gojsonschema in
glide.yaml

This updates glide.yaml to reflect the upper-case as well as lower-case
versions of logrus as well as adds a versionized gojsonschema in order
to get rid of the following error:

```sh
▶ make bin
go build -ldflags="-w -X github.com/kubernetes/kompose/cmd.GITCOMMIT=0e56b7d" -o kompose main.go
vendor/github.com/docker/cli/cli/compose/schema/schema.go:34: cannot use portsFormatChecker literal (type portsFormatChecker) as type gojsonschema.FormatChecker in argument to gojsonschema.FormatCheckers.Add:
        portsFormatChecker does not implement gojsonschema.FormatChecker (wrong type for IsFormat method)
                have IsFormat(string) bool
                want IsFormat(interface {}) bool
vendor/github.com/docker/cli/cli/compose/schema/schema.go:35: cannot use portsFormatChecker literal (type portsFormatChecker) as type gojsonschema.FormatChecker in argument to gojsonschema.FormatCheckers.Add:
        portsFormatChecker does not implement gojsonschema.FormatChecker (wrong type for IsFormat method)
                have IsFormat(string) bool
                want IsFormat(interface {}) bool
vendor/github.com/docker/cli/cli/compose/schema/schema.go:36: cannot use durationFormatChecker literal (type durationFormatChecker) as type gojsonschema.FormatChecker in argument to gojsonschema.FormatCheckers.Add:
        durationFormatChecker does not implement gojsonschema.FormatChecker (wrong type for IsFormat method)
                have IsFormat(string) bool
                want IsFormat(interface {}) bool
vendor/github.com/docker/libcompose/config/schema_helpers.go:60: cannot use environmentFormatChecker literal (type environmentFormatChecker) as type gojsonschema.FormatChecker in argument to gojsonschema.FormatCheckers.Add:
        environmentFormatChecker does not implement gojsonschema.FormatChecker (wrong type for IsFormat method)
                have IsFormat(string) bool
                want IsFormat(interface {}) bool
vendor/github.com/docker/libcompose/config/schema_helpers.go:61: cannot use portsFormatChecker literal (type portsFormatChecker) as type gojsonschema.FormatChecker in argument to gojsonschema.FormatCheckers.Add:
        portsFormatChecker does not implement gojsonschema.FormatChecker (wrong type for IsFormat method)
                have IsFormat(string) bool
                want IsFormat(interface {}) bool
vendor/github.com/docker/libcompose/config/schema_helpers.go:62: cannot use portsFormatChecker literal (type portsFormatChecker) as type gojsonschema.FormatChecker in argument to gojsonschema.FormatCheckers.Add:
        portsFormatChecker does not implement gojsonschema.FormatChecker (wrong type for IsFormat method)
                have IsFormat(string) bool
                want IsFormat(interface {}) bool
^CMakefile:29: recipe for target 'bin' failed
make: *** [bin] Interrupt
```

vendor/github.com/mitchellh/mapstructure/decode_hooks.go

@@ -38,12 +38,6 @@ func DecodeHookExec(
 	raw DecodeHookFunc,
 	from reflect.Type, to reflect.Type,
 	data interface{}) (interface{}, error) {
-	// Build our arguments that reflect expects
-	argVals := make([]reflect.Value, 3)
-	argVals[0] = reflect.ValueOf(from)
-	argVals[1] = reflect.ValueOf(to)
-	argVals[2] = reflect.ValueOf(data)
-
 	switch f := typedDecodeHook(raw).(type) {
 	case DecodeHookFuncType:
 		return f(from, to, data)
@@ -121,6 +115,11 @@ func StringToTimeDurationHookFunc() DecodeHookFunc {
 	}
 }
 
+// WeaklyTypedHook is a DecodeHookFunc which adds support for weak typing to
+// the decoder.
+//
+// Note that this is significantly different from the WeaklyTypedInput option
+// of the DecoderConfig.
 func WeaklyTypedHook(
 	f reflect.Kind,
 	t reflect.Kind,
@@ -132,9 +131,8 @@ func WeaklyTypedHook(
 		case reflect.Bool:
 			if dataVal.Bool() {
 				return "1", nil
-			} else {
-				return "0", nil
 			}
+			return "0", nil
 		case reflect.Float32:
 			return strconv.FormatFloat(dataVal.Float(), 'f', -1, 64), nil
 		case reflect.Int:

vendor/github.com/mitchellh/mapstructure/mapstructure.go

@@ -1,5 +1,5 @@
-// The mapstructure package exposes functionality to convert an
-// arbitrary map[string]interface{} into a native Go structure.
+// Package mapstructure exposes functionality to convert an arbitrary
+// map[string]interface{} into a native Go structure.
 //
 // The Go structure can be arbitrarily complex, containing slices,
 // other structs, etc. and the decoder will properly decode nested
@@ -32,7 +32,12 @@ import (
 // both.
 type DecodeHookFunc interface{}
 
+// DecodeHookFuncType is a DecodeHookFunc which has complete information about
+// the source and target types.
 type DecodeHookFuncType func(reflect.Type, reflect.Type, interface{}) (interface{}, error)
+
+// DecodeHookFuncKind is a DecodeHookFunc which knows only the Kinds of the
+// source and target types.
 type DecodeHookFuncKind func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error)
 
 // DecoderConfig is the configuration that is used to create a new decoder
@@ -69,6 +74,9 @@ type DecoderConfig struct {
 	//   - empty array = empty map and vice versa
 	//   - negative numbers to overflowed uint values (base 10)
 	//   - slice of maps to a merged map
+	//   - single values are converted to slices if required. Each
+	//     element is weakly decoded. For example: "4" can become []int{4}
+	//     if the target type is an int slice.
 	//
 	WeaklyTypedInput bool
 
@@ -433,7 +441,7 @@ func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value)
 	case dataKind == reflect.Uint:
 		val.SetFloat(float64(dataVal.Uint()))
 	case dataKind == reflect.Float32:
-		val.SetFloat(float64(dataVal.Float()))
+		val.SetFloat(dataVal.Float())
 	case dataKind == reflect.Bool && d.config.WeaklyTypedInput:
 		if dataVal.Bool() {
 			val.SetFloat(1)
@@ -584,17 +592,28 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
 
 	valSlice := val
 	if valSlice.IsNil() || d.config.ZeroFields {
-
 		// Check input type
 		if dataValKind != reflect.Array && dataValKind != reflect.Slice {
-			// Accept empty map instead of array/slice in weakly typed mode
-			if d.config.WeaklyTypedInput && dataVal.Kind() == reflect.Map && dataVal.Len() == 0 {
-				val.Set(reflect.MakeSlice(sliceType, 0, 0))
-				return nil
-			} else {
-				return fmt.Errorf(
-					"'%s': source data must be an array or slice, got %s", name, dataValKind)
+			if d.config.WeaklyTypedInput {
+				switch {
+				// Empty maps turn into empty slices
+				case dataValKind == reflect.Map:
+					if dataVal.Len() == 0 {
+						val.Set(reflect.MakeSlice(sliceType, 0, 0))
+						return nil
+					}
+
+				// All other types we try to convert to the slice type
+				// and "lift" it into it. i.e. a string becomes a string slice.
+				default:
+					// Just re-try this function with data as a slice.
+					return d.decodeSlice(name, []interface{}{data}, val)
+				}
 			}
+
+			return fmt.Errorf(
+				"'%s': source data must be an array or slice, got %s", name, dataValKind)
+
 		}
 
 		// Make a new slice to hold our result, same size as the original data.