add clang-tidy

This commit implements a clang-tidy file, and makes some changes to get
it to pass.  Most changes are naming or mechanical in nature.

Tested:
Clang-tidy now passes.

Signed-off-by: Ed Tanous <ed@tanous.net>
Change-Id: Ia441e4801b6c8725421d160c531c5df141f255d4
diff --git a/src/TachSensor.cpp b/src/TachSensor.cpp
index 0490135..bffc30e 100644
--- a/src/TachSensor.cpp
+++ b/src/TachSensor.cpp
@@ -14,12 +14,10 @@
 // limitations under the License.
 */
 
-#include "TachSensor.hpp"
-
-#include "Utils.hpp"
-
 #include <unistd.h>
 
+#include <TachSensor.hpp>
+#include <Utils.hpp>
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/asio/read_until.hpp>
@@ -48,12 +46,12 @@
                        std::unique_ptr<PresenceSensor>&& presenceSensor,
                        std::optional<RedundancySensor>* redundancy,
                        boost::asio::io_service& io, const std::string& fanName,
-                       std::vector<thresholds::Threshold>&& _thresholds,
+                       std::vector<thresholds::Threshold>&& thresholds,
                        const std::string& sensorConfiguration,
                        const std::pair<size_t, size_t>& limits,
                        const PowerState& powerState,
                        const std::optional<std::string>& ledIn) :
-    Sensor(boost::replace_all_copy(fanName, " ", "_"), std::move(_thresholds),
+    Sensor(boost::replace_all_copy(fanName, " ", "_"), std::move(thresholds),
            sensorConfiguration, objectType, limits.second, limits.first, conn,
            powerState),
     objServer(objectServer), redundancy(redundancy),
@@ -255,7 +253,7 @@
                           {
                               return; // we're being destroyed
                           }
-                          else if (ec)
+                          if (ec)
                           {
                               std::cerr << "Error on presence sensor " << name
                                         << " \n";
@@ -330,7 +328,7 @@
             newState = redundancy::failed;
             break;
         }
-        else if (failedCount)
+        if (failedCount)
         {
             newState = redundancy::degraded;
         }