Updating server dependancies (#6712)

vendor/github.com/go-ldap/ldap/atomic_value.go

@@ -1,13 +0,0 @@
-// +build go1.4
-
-package ldap
-
-import (
-	"sync/atomic"
-)
-
-// For compilers that support it, we just use the underlying sync/atomic.Value
-// type.
-type atomicValue struct {
-	atomic.Value
-}