upgrade go-validator to v10

[fifsky]

fix #2130

The only difference between v10 and v9 is the package path

[thinkerou]

$make vet
go vet github.com/gin-gonic/gin github.com/gin-gonic/gin/binding github.com/gin-gonic/gin/ginS github.com/gin-gonic/gin/internal/json github.com/gin-gonic/gin/render
The command "make vet" exited with 0.
0.27s$ make fmt-check
Please run 'make fmt' and commit the result:
diff -u ./binding/validate_test.go.orig ./binding/validate_test.go
--- ./binding/validate_test.go.orig	2019-11-25 02:23:09.994483229 +0000
+++ ./binding/validate_test.go	2019-11-25 02:23:09.994483229 +0000
@@ -9,8 +9,8 @@
 	"testing"
 	"time"
 
-	"github.com/stretchr/testify/assert"
 	"github.com/go-playground/validator/v10"
+	"github.com/stretchr/testify/assert"
 )
 
 type testInterface interface {
Makefile:41: recipe for target 'fmt-check' failed

[codecov]

Codecov Report

Merging #2149 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2149   +/-   ##
=======================================
  Coverage   98.61%   98.61%           
=======================================
  Files          40       40           
  Lines        2238     2238           
=======================================
  Hits         2207     2207           
  Misses         16       16           
  Partials       15       15

Impacted Files	Coverage Δ
binding/default_validator.go	100% <ø> (ø)	⬆️

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[thinkerou]

LGTM