For each zone log sensor name with max setpoint

Add sensor name that has the maximum setpoint for a PID zone.
Log a debug message when the sensor is changed.
The name is also added to the log file for each log record.

Tested:
Override one CPU temperature sensor
busctl set-property xyz.openbmc_project.CPUSensor /xyz/openbmc_project/sensors/temperature/DTS_CPU1 xyz.openbmc_project.Sensor.Value Value d 82
Observed log message:
swampd[443]: PID Zone 0 max SetPoint 34.5546 requested by DTS_CPU1

Signed-off-by: Nirav Shah <nirav.j2.shah@intel.com>
Signed-off-by: Zhikui Ren <zhikui.ren@intel.com>
Change-Id: Ifc12cb9a106da1bf41dd35697210f74ba1b589db
diff --git a/test/pid_stepwisecontroller_unittest.cpp b/test/pid_stepwisecontroller_unittest.cpp
index d9a7728..a832ed7 100644
--- a/test/pid_stepwisecontroller_unittest.cpp
+++ b/test/pid_stepwisecontroller_unittest.cpp
@@ -44,8 +44,8 @@
         .WillOnce(Return(31.0))  // return 40
         .WillOnce(Return(32.0)); // return 60
 
-    EXPECT_CALL(z, addSetPoint(40.0)).Times(2);
-    EXPECT_CALL(z, addSetPoint(60.0)).Times(1);
+    EXPECT_CALL(z, addSetPoint(40.0, "foo")).Times(2);
+    EXPECT_CALL(z, addSetPoint(60.0, "foo")).Times(1);
 
     for (int ii = 0; ii < 3; ii++)
     {
@@ -80,8 +80,8 @@
         .WillOnce(Return(27.0))  // return 60
         .WillOnce(Return(26.0)); // return 40
 
-    EXPECT_CALL(z, addSetPoint(40.0)).Times(1);
-    EXPECT_CALL(z, addSetPoint(60.0)).Times(2);
+    EXPECT_CALL(z, addSetPoint(40.0, "foo")).Times(1);
+    EXPECT_CALL(z, addSetPoint(60.0, "foo")).Times(2);
 
     for (int ii = 0; ii < 3; ii++)
     {
diff --git a/test/pid_thermalcontroller_unittest.cpp b/test/pid_thermalcontroller_unittest.cpp
index ef4de66..57a1b9f 100644
--- a/test/pid_thermalcontroller_unittest.cpp
+++ b/test/pid_thermalcontroller_unittest.cpp
@@ -104,7 +104,7 @@
     EXPECT_FALSE(p == nullptr);
 
     double value = 90.0;
-    EXPECT_CALL(z, addSetPoint(value));
+    EXPECT_CALL(z, addSetPoint(value, "therm1"));
 
     p->outputProc(value);
 }
@@ -175,7 +175,7 @@
         .WillOnce(Return(9.0))
         .WillOnce(Return(7.0));
 
-    EXPECT_CALL(z, addSetPoint(_)).Times(3);
+    EXPECT_CALL(z, addSetPoint(_, "therm1")).Times(3);
 
     std::vector<double> lastReadings = {12.0, 12.0, 7.0};
     for (auto& reading : lastReadings)
@@ -208,7 +208,7 @@
         .WillOnce(Return(13.0))
         .WillOnce(Return(14.0));
 
-    EXPECT_CALL(z, addSetPoint(_)).Times(3);
+    EXPECT_CALL(z, addSetPoint(_, "therm1")).Times(3);
 
     std::vector<double> lastReadings = {8.0, 8.0, 14.0};
     for (auto& reading : lastReadings)
diff --git a/test/pid_zone_unittest.cpp b/test/pid_zone_unittest.cpp
index 90d2a2f..172c818 100644
--- a/test/pid_zone_unittest.cpp
+++ b/test/pid_zone_unittest.cpp
@@ -161,14 +161,14 @@
 TEST_F(PidZoneTest, RpmSetPoints_AddMaxClear_BehaveAsExpected)
 {
     // Tests addSetPoint, clearSetPoints, determineMaxSetPointRequest
-    // and getMinThermalSetpoint.
+    // and getMinThermalSetPoint.
 
     // At least one value must be above the minimum thermal setpoint used in
     // the constructor otherwise it'll choose that value
     std::vector<double> values = {100, 200, 300, 400, 500, 5000};
     for (auto v : values)
     {
-        zone->addSetPoint(v);
+        zone->addSetPoint(v, "");
     }
 
     // This will pull the maximum RPM setpoint request.
@@ -180,7 +180,7 @@
 
     // This will go through the RPM set point values and grab the maximum.
     zone->determineMaxSetPointRequest();
-    EXPECT_EQ(zone->getMinThermalSetpoint(), zone->getMaxSetPointRequest());
+    EXPECT_EQ(zone->getMinThermalSetPoint(), zone->getMaxSetPointRequest());
 }
 
 TEST_F(PidZoneTest, RpmSetPoints_AddBelowMinimum_BehavesAsExpected)
@@ -191,14 +191,14 @@
     std::vector<double> values = {100, 200, 300, 400, 500};
     for (auto v : values)
     {
-        zone->addSetPoint(v);
+        zone->addSetPoint(v, "");
     }
 
     // This will pull the maximum RPM setpoint request.
     zone->determineMaxSetPointRequest();
 
     // Verifies the value returned in the minimal thermal rpm set point.
-    EXPECT_EQ(zone->getMinThermalSetpoint(), zone->getMaxSetPointRequest());
+    EXPECT_EQ(zone->getMinThermalSetPoint(), zone->getMaxSetPointRequest());
 }
 
 TEST_F(PidZoneTest, GetFailSafePercent_ReturnsExpected)
diff --git a/test/zone_mock.hpp b/test/zone_mock.hpp
index bab77e3..dd98c15 100644
--- a/test/zone_mock.hpp
+++ b/test/zone_mock.hpp
@@ -19,7 +19,7 @@
     MOCK_METHOD0(initializeCache, void());
     MOCK_METHOD1(getCachedValue, double(const std::string&));
     MOCK_CONST_METHOD0(getRedundantWrite, bool(void));
-    MOCK_METHOD1(addSetPoint, void(double));
+    MOCK_METHOD2(addSetPoint, void(double, const std::string&));
     MOCK_METHOD0(clearSetPoints, void());
     MOCK_METHOD1(addRPMCeiling, void(double));
     MOCK_METHOD0(clearRPMCeilings, void());