[utilities]: Update sonic-utilities submodule

Shu0T1an ChenG · Shu0T1an ChenG · commit df3436b80b29 · 2017-08-10T19:24:43.000-07:00
- [sfputil]: Refactor and add support for presence, low-power mode and reset
diff --git a/src/sonic-utilities b/src/sonic-utilities
@@ -1 +1 @@
-Subproject commit c7f6ff677b54eb401e7b2fd3a3d9c4072325bb78
+Subproject commit ac7ea4f3b9dcc5cef15cc7ec0e796cde8a7f8ab8
