monitor: refactor systemd signal monitor variable

A new systemd signal monitor will be required so make the variable name
more specific

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I4b48d7f2ade7c81e72c788b3af8fb30a33cae9ef
diff --git a/systemd_target_signal.hpp b/systemd_target_signal.hpp
index 8dc8faf..d0719a8 100644
--- a/systemd_target_signal.hpp
+++ b/systemd_target_signal.hpp
@@ -30,7 +30,7 @@
                          sdbusplus::bus::bus& bus) :
         targetData(targetData),
         bus(bus),
-        systemdSignals(
+        systemdJobRemovedSignal(
             bus,
             sdbusplus::bus::match::rules::type::signal() +
                 sdbusplus::bus::match::rules::member("JobRemoved") +
@@ -88,8 +88,8 @@
     /** @brief Persistent sdbusplus DBus bus connection. */
     sdbusplus::bus::bus& bus;
 
-    /** @brief Used to subscribe to dbus systemd signals **/
-    sdbusplus::bus::match_t systemdSignals;
+    /** @brief Used to subscribe to dbus systemd JobRemoved signals **/
+    sdbusplus::bus::match_t systemdJobRemovedSignal;
 };
 
 } // namespace manager