[sonic-linkmgrd][master] submodule update (sonic-net#9420)

zjswhhh · web-flow · commit a263edbc9822 · 2021-12-08T08:54:00.000-08:00
#### What I did [sonic-linkmgrd][master] submodule update 6c6151b Fix unstable unit tests (state change handler wasn't invoked) (#8) 2f7dc0a support code diff coverage (#5) 83f0002 Force mux state switch to standby if triggered from Cli (#6) signed-off-by: Jing Zhang zhangjing@microsoft.com
diff --git a/src/linkmgrd b/src/linkmgrd
@@ -1 +1 @@
-Subproject commit c11a5763a070a68af048ccd9ca473294f93fb256
+Subproject commit 6c6151ba9512166de0430e8e95076809dd706496
