Move dbus connection into base sensor object

This seems common through most sensors, might as
well move it for consistency.

Tested: sensors operational as normal

Change-Id: I4e6c55cbb7171ee51700015f8c2ef8c05c90fb4e
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/src/PSUSensor.cpp b/src/PSUSensor.cpp
index f93846d..0086382 100644
--- a/src/PSUSensor.cpp
+++ b/src/PSUSensor.cpp
@@ -46,7 +46,8 @@
                      double max, double min, const std::string& label,
                      size_t tSize) :
     Sensor(boost::replace_all_copy(sensorName, " ", "_"),
-           std::move(_thresholds), sensorConfiguration, objectType, max, min),
+           std::move(_thresholds), sensorConfiguration, objectType, max, min,
+           conn),
     std::enable_shared_from_this<PSUSensor>(), objServer(objectServer),
     inputDev(io), waitTimer(io), path(path), sensorFactor(factor)
 {