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/nonzero_speed_trust.hpp b/monitor/nonzero_speed_trust.hpp
index e1f787f..7e6a85a 100644
--- a/monitor/nonzero_speed_trust.hpp
+++ b/monitor/nonzero_speed_trust.hpp
@@ -54,7 +54,7 @@
                     _sensors.end(),
                     [](const auto& s)
                     {
-                        return std::get<0>(s)->getInput() != 0;
+                        return s.sensor->getInput() != 0;
                     });
         }
 };