[ISSUE #1988] Fix the issue that can not update messageDelay correctly with mqadmin updateBrokerConfig command

[RealBar]

use "$@" instead of #@ to make mutiple value parceled by quoted
available.

What is the purpose of the change

fix issue 1988
#1988

Brief changelog

use "$@" instead of #@ to make mutiple value parceled by quoted
available.

Verifying this change

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[coveralls]

Coverage increased (+0.09%) to 50.919% when pulling 47b22ec on RealBar:fix/issue1988 into 8ef01a6 on apache:master.

[geektcp]

ok