[submodule]: update sonic-swss (#4026)

[201811][port/buffer] introduce a sync mechanism to protect port PG/queue from changes under PFC stormPfcwd bufferorch sync 201811
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Qi Luo 2020-01-16 10:27:25 -08:00 committed by GitHub
parent 1fd4a36371
commit 516cf64572
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Subproject commit f6bfe77db9055257936e60e9e1666ed653188a4d
Subproject commit 49aff5da389f1df97a27d8d46a9c7d5f3accefa3