Modify set-value function from external

    Move Special mode from bmcweb to dbus-sensors, this will be handled via dbus-sensor when the user set-value f$
    This is unlikely to break any users because the Intel special mode function is no change, only move to dbus-s$

    The set value function is to filter the external set, excluding the internal set.
    In the external set, if in INSECURE_UNRESTRICTED_SENSOR_OVERRIDE, no need to check before set value else add $

    bmcweb needs to be merged at the same time.
    bmcweb changes are pushed to Gerrit:
    https://gerrit.openbmc-project.xyz/c/openbmc/bmcweb/+/42448

    the mailing list discussion links:
    https://lists.ozlabs.org/pipermail/openbmc/2021-March/025597.html

Signed-off-by: Bruce Lee <Bruce_Lee@quantatw.com>
Change-Id: I0919e4d2343e81045010a2b0d4bf01dc272bcb07
diff --git a/src/ExitAirTempSensor.cpp b/src/ExitAirTempSensor.cpp
index ed24155..1cd55b8 100644
--- a/src/ExitAirTempSensor.cpp
+++ b/src/ExitAirTempSensor.cpp
@@ -164,8 +164,8 @@
                      std::shared_ptr<ExitAirTempSensor>& parent) :
     Sensor(boost::replace_all_copy(sensorName, " ", "_"),
            std::move(thresholdData), sensorConfiguration,
-           "xyz.openbmc_project.Configuration.ExitAirTemp", cfmMaxReading,
-           cfmMinReading, conn, PowerState::on),
+           "xyz.openbmc_project.Configuration.ExitAirTemp", false,
+           cfmMaxReading, cfmMinReading, conn, PowerState::on),
     std::enable_shared_from_this<CFMSensor>(), parent(parent),
     objServer(objectServer)
 {
@@ -513,8 +513,8 @@
     std::vector<thresholds::Threshold>&& thresholdData) :
     Sensor(boost::replace_all_copy(sensorName, " ", "_"),
            std::move(thresholdData), sensorConfiguration,
-           "xyz.openbmc_project.Configuration.ExitAirTemp", exitAirMaxReading,
-           exitAirMinReading, conn, PowerState::on),
+           "xyz.openbmc_project.Configuration.ExitAirTemp", false,
+           exitAirMaxReading, exitAirMinReading, conn, PowerState::on),
     std::enable_shared_from_this<ExitAirTempSensor>(), objServer(objectServer)
 {
     sensorInterface = objectServer.add_interface(