Replace tuple with struct for trust sensor group

To simplify sensor and trust access, utilize a struct in place of a
tuple for storing the trust group sensors and their inclusion in the
trust determination.

Tested: Current trust group associations & reactions are unchanged

Change-Id: Ifd5cf5d0540a3b2028ccf74e725d8ddd11982aee
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/monitor/trust_group.hpp b/monitor/trust_group.hpp
index 7f28f6c..a41520a 100644
--- a/monitor/trust_group.hpp
+++ b/monitor/trust_group.hpp
@@ -14,6 +14,12 @@
 using GroupDefinition = std::tuple<std::string,
                                         bool>;
 
+struct GroupSensor
+{
+    std::shared_ptr<monitor::TachSensor> sensor;
+    bool inTrust;
+};
+
 /**
  * @class Group
  *
@@ -75,8 +81,7 @@
 
             if (found != _names.end())
             {
-                auto gs = std::make_tuple(sensor, std::get<inTrust>(*found));
-                _sensors.push_back(gs);
+                _sensors.push_back({sensor, std::get<inTrust>(*found)});
             }
         }
 
@@ -95,7 +100,7 @@
                      _sensors.end(),
                      [&sensor](const auto& s)
                      {
-                         return sensor.name() == std::get<0>(s)->name();
+                         return sensor.name() == s.sensor->name();
                      }) != _sensors.end());
          }
 
@@ -113,7 +118,7 @@
                     _sensors.end(),
                     [](const auto& s)
                     {
-                        std::get<0>(s)->stopTimer();
+                        s.sensor->stopTimer();
                     });
         }
 
@@ -132,11 +137,12 @@
                     {
                         //If a sensor isn't functional, then its timer
                         //already expired so don't bother starting it again
-                        if (std::get<0>(s)->functional() &&
-                            static_cast<uint64_t>(std::get<0>(s)->getInput()) !=
-                                    std::get<0>(s)->getTarget())
+                        if (s.sensor->functional() &&
+                            static_cast<uint64_t>(
+                                s.sensor->getInput()) !=
+                                    s.sensor->getTarget())
                         {
-                            std::get<0>(s)->startTimer();
+                            s.sensor->startTimer();
                         }
                     });
         }
@@ -200,9 +206,7 @@
          *
          * Added by registerSensor().
          */
-        std::vector<std::tuple<
-                std::shared_ptr<monitor::TachSensor>,
-                bool>> _sensors;
+        std::vector<GroupSensor> _sensors;
 
     private: