sensorcommands: add utility header

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: If3c7971c9eed7a1296280d47fb27fe92de25efb7
diff --git a/src/sensorcommands.cpp b/src/sensorcommands.cpp
index effd0f5..7fc11a0 100644
--- a/src/sensorcommands.cpp
+++ b/src/sensorcommands.cpp
@@ -32,6 +32,7 @@
 #include <sensorutils.hpp>
 #include <storagecommands.hpp>
 #include <string>
+#include <utility>
 
 namespace ipmi
 {