*: switch from godep to glide

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

vendor/google.golang.org/grpc/credentials/credentials.go

@@ -35,12 +35,11 @@
 // which encapsulate all the state needed by a client to authenticate with a
 // server and make various assertions, e.g., about the client's identity, role,
 // or whether it is authorized to make a particular call.
-package credentials
+package credentials // import "google.golang.org/grpc/credentials"
 
 import (
 	"crypto/tls"
 	"crypto/x509"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"net"
@@ -87,12 +86,6 @@ type AuthInfo interface {
 	AuthType() string
 }
 
-var (
-	// ErrConnDispatched indicates that rawConn has been dispatched out of gRPC
-	// and the caller should not close rawConn.
-	ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC")
-)
-
 // TransportCredentials defines the common interface for all the live gRPC wire
 // protocols and supported transport security protocols (e.g., TLS, SSL).
 type TransportCredentials interface {