use quotes for local headers

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I95f247bd17cffab8b9ef3337f48336f8d7059c2d
diff --git a/src/IntrusionSensorMain.cpp b/src/IntrusionSensorMain.cpp
index fe4a79f..dab04ef 100644
--- a/src/IntrusionSensorMain.cpp
+++ b/src/IntrusionSensorMain.cpp
@@ -14,10 +14,11 @@
 // limitations under the License.
 */
 
+#include "ChassisIntrusionSensor.hpp"
+#include "Utils.hpp"
+
 #include <systemd/sd-journal.h>
 
-#include <ChassisIntrusionSensor.hpp>
-#include <Utils.hpp>
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/asio.hpp>
 #include <chrono>