Yes, I think it's possible but you need to use traffic-policy instead of qos policy. I tried to configure this command but it's not supported, so you can try to use traffic policy.
Configure traffic classifications to match ACL 3051 [USG_A] traffic classifier outipsec [USG_A-classifier-outipsec] if-match acl 3051 [USG_A-classifier-outipsec] quit
Configure traffic behaviors to forward IPSec traffic to the AF queue, which uses the 5M bandwidth assigned for the IPSec traffic in priority. [USG_A] traffic behavior outipsec [USG_A-behavior-outipsec] queue af bandwidth 5000 [USG_A-behavior-outipsec] quit
Configure a traffic policy to match traffic classifications and traffic behaviors. [Huawei]traffic policy p1 [Huawei-trafficpolicy-p1]classifier outipsec behavior outipsec [USG_A-qospolicy-flow_outbound] quit
Apply traffic policies outipsec to interfaces, and set the interface rate smaller than the bandwidth provided by the carrier. In this example, the interface rate is set to 9M to make configured congestion management take effect. [USG_A] interface GigabitEthernet 0/0/1 [USG_A-GigabitEthernet0/0/1] traffic-policy p1 [USG_A-GigabitEthernet0/0/1] qos lr cir 9000 cbs 4500 [USG_A-GigabitEthernet0/0/1] quit
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