This is a huge commit, it does following things: (#1942)

1. Remove ks-iam standalone binary, move it to ks-apiserver
2. Generate all devops apis inside kubesphere repository, no need to
import s2ioperator.
3. Reorganize ldap code, make it more flexible to use.

pkg/simple/client/cache/cache.go

@@ -13,10 +13,10 @@ type Interface interface {
 	Set(key string, value string, duration time.Duration) error
 
 	// Del deletes the given key, no error returned if the key doesn't exists
-	Del(key string) error
+	Del(keys ...string) error
 
 	// Exists checks the existence of a give key
-	Exists(key string) (bool, error)
+	Exists(keys ...string) (bool, error)
 
 	// Expires updates object's expiration time, return err if key doesn't exist
 	Expire(key string, duration time.Duration) error