monitor: Add thermal fault alert D-Bus property

Add a new property to alert of a thermal fault.  In this context, it
means an imminent power off due to fan faults.  On certain IBM systems
it will be used as a mechanism to alert the host of the power off when
the 'epow_power_off' power off rule is used.

Service: xyz.openbmc_project.Thermal.Alert
Path: /xyz/openbmc_project/alerts/thermal_fault_alert
Interface: xyz.openbmc_project.Object.Enable
Property: Enabled

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I0531de9ce40b6148244fda18a20e144bad85d830
diff --git a/monitor/main.cpp b/monitor/main.cpp
index 93a5e1d..ae6d034 100644
--- a/monitor/main.cpp
+++ b/monitor/main.cpp
@@ -77,6 +77,8 @@
                                        std::bind(&System::sighupHandler,
                                                  &system, std::placeholders::_1,
                                                  std::placeholders::_2));
+
+    bus.request_name(THERMAL_ALERT_BUSNAME);
 #endif
 
 #ifndef MONITOR_USE_JSON