Merge branch 'bugfix_sftp' into dev

coco/connection.py

@@ -22,11 +22,24 @@ class SSHConnection:
     def app(self):
         return self._app()
 
+    def get_system_user_auth(self, system_user):
+        """
+        获取系统用户的认证信息，密码或秘钥
+        :return: system user have full info
+        """
+        password, private_key = \
+            self.app.service.get_system_user_auth_info(system_user)
+        system_user.password = password
+        system_user.private_key = private_key
+
     def get_ssh_client(self, asset, system_user):
         ssh = paramiko.SSHClient()
         ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
         sock = None
 
+        if not system_user.password and not system_user.private_key:
+            self.get_system_user_auth(system_user)
+
         if asset.domain:
             sock = self.get_proxy_sock(asset)