Revert "[Fix] Fix ssh issue, when the password is not None."

This reverts commit 59128d1.

deployment/k8sPaiLibrary/maintainlib/common.py

@@ -202,8 +202,7 @@ def sftp_paramiko(src, dst, filename, host_config):
     ssh.connect(hostname=hostip, port=port, key_filename=key_filename, username=username, password=password)
 
     stdin, stdout, stderr = ssh.exec_command("sudo mkdir -p {0}".format(dst), get_pty=True)
-    password = password if password is not None else ''
-    stdin.write(password + '\n')
+    stdin.write(password if password is not None else '' + '\n')
     stdin.flush()
     for response_msg in stdout:
         print(response_msg.encode('utf-8').strip('\n'))
@@ -314,8 +313,7 @@ def ssh_shell_with_password_input_paramiko(host_config, commandline):
     ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
     ssh.connect(hostname=hostip, port=port, key_filename=key_filename, username=username, password=password)
     stdin, stdout, stderr = ssh.exec_command(commandline, get_pty=True)
-    password = password if password is not None else ''
-    stdin.write(password + '\n')
+    stdin.write(password if password is not None else '' + '\n')
     stdin.flush()
     logger.info("Executing the command on host [{0}]: {1}".format(hostip, commandline))
     for response_msg in stdout: