Remove x/net/context vendor by using std package (#5202)

* Update dep github.com/markbates/goth

* Update dep github.com/blevesearch/bleve

* Update dep golang.org/x/oauth2

* Fix github.com/blevesearch/bleve to c74e08f039e56cef576e4336382b2a2d12d9e026

* Update dep golang.org/x/oauth2

vendor/github.com/markbates/goth/provider.go

@@ -1,10 +1,10 @@
 package goth
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 
-	"golang.org/x/net/context"
 	"golang.org/x/oauth2"
 )
 

vendor/github.com/markbates/goth/providers/facebook/facebook.go

@@ -4,17 +4,18 @@ package facebook
 
 import (
 	"bytes"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"net/http"
 	"net/url"
+	"strings"
 
-	"crypto/hmac"
-	"crypto/sha256"
-	"encoding/hex"
-	"fmt"
 	"github.com/markbates/goth"
 	"golang.org/x/oauth2"
 )
@@ -22,7 +23,7 @@ import (
 const (
 	authURL         string = "https://www.facebook.com/dialog/oauth"
 	tokenURL        string = "https://graph.facebook.com/oauth/access_token"
-	endpointProfile string = "https://graph.facebook.com/me?fields=email,first_name,last_name,link,about,id,name,picture,location"
+	endpointProfile string = "https://graph.facebook.com/me?fields="
 )
 
 // New creates a new Facebook provider, and sets up important connection details.
@@ -68,9 +69,9 @@ func (p *Provider) Debug(debug bool) {}
 
 // BeginAuth asks Facebook for an authentication end-point.
 func (p *Provider) BeginAuth(state string) (goth.Session, error) {
-	url := p.config.AuthCodeURL(state)
+	authUrl := p.config.AuthCodeURL(state)
 	session := &Session{
-		AuthURL: url,
+		AuthURL: authUrl,
 	}
 	return session, nil
 }
@@ -96,7 +97,15 @@ func (p *Provider) FetchUser(session goth.Session) (goth.User, error) {
 	hash.Write([]byte(sess.AccessToken))
 	appsecretProof := hex.EncodeToString(hash.Sum(nil))
 
-	response, err := p.Client().Get(endpointProfile + "&access_token=" + url.QueryEscape(sess.AccessToken) + "&appsecret_proof=" + appsecretProof)
+	reqUrl := fmt.Sprint(
+		endpointProfile,
+		strings.Join(p.config.Scopes, ","),
+		"&access_token=",
+		url.QueryEscape(sess.AccessToken),
+		"&appsecret_proof=",
+		appsecretProof,
+	)
+	response, err := p.Client().Get(reqUrl)
 	if err != nil {
 		return user, err
 	}
@@ -168,17 +177,31 @@ func newConfig(provider *Provider, scopes []string) *oauth2.Config {
 		},
 		Scopes: []string{
 			"email",
+			"first_name",
+			"last_name",
+			"link",
+			"about",
+			"id",
+			"name",
+			"picture",
+			"location",
 		},
 	}
 
-	defaultScopes := map[string]struct{}{
-		"email": {},
-	}
-
-	for _, scope := range scopes {
-		if _, exists := defaultScopes[scope]; !exists {
-			c.Scopes = append(c.Scopes, scope)
+	// creates possibility to invoke field method like 'picture.type(large)'
+	var found bool
+	for _, sc := range scopes {
+		sc := sc
+		for i, defScope := range c.Scopes {
+			if defScope == strings.Split(sc, ".")[0] {
+				c.Scopes[i] = sc
+				found = true
+			}
 		}
+		if !found {
+			c.Scopes = append(c.Scopes, sc)
+		}
+		found = false
 	}
 
 	return c