CONTP-396443：启用Cisco Duo后、通过SSH连接到节点失败

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问题描述

如果将Duo用于SSH身份验证、并使用需要凭据的身份验证代理、则客户会遇到系统崩溃的问题。
之所以出现问题描述、是因为Duo集成处理代理身份验证的方法不对、从而导致崩溃。
我们看到ssd和mgwd用户空间崩溃：
[Node1: sshd: ucore.panicString:error]: 'sshd: Abort: Attempted to free non allocated memory.(0x7062657770747468), raising SIGABRT(6) at RIP 0x8010e3a3a (pid 7352, uid 0, timestamp 1739191562)' [Node1: mgwd: ucore.panicString:error]: 'mgwd: Abort: Attempted to free non allocated memory.(0x7062657770747468), raising SIGABRT(6) at RIP 0x81ed61a3a (pid 74349, uid 0, timestamp 1739213650)' [Node1: spmd: spm.mgwd.process.exit:EMERGENCY]: Management Gateway (mgwd) subsystem with ID 74349 exited as a result of signal signal 6. The subsystem will attempt to restart.