Using sdbusplus::asio::getProperty

It simplifies a lot of code and after changing sdbusplus implementation
slightly reduces binary size if used together with:

https://gerrit.openbmc-project.xyz/c/openbmc/sdbusplus/+/49467

* Uncompressed size:    3033148 -> 3012164, -20984 B
* gzip compressed size: 1220586 -> 1214625, -5961 B

Tested:
- Redfish validator output is the same before and after the change

Change-Id: Ibe3227d3f4230de2363ba3d9396e51130c8240a5
Signed-off-by: Jonathan Doman <jonathan.doman@intel.com>
Signed-off-by: Krzysztof Grobelny <krzysztof.grobelny@intel.com>
diff --git a/redfish-core/lib/health.hpp b/redfish-core/lib/health.hpp
index 510b895..41352da 100644
--- a/redfish-core/lib/health.hpp
+++ b/redfish-core/lib/health.hpp
@@ -21,6 +21,7 @@
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/container/flat_set.hpp>
 #include <dbus_singleton.hpp>
+#include <dbus_utility.hpp>
 
 #include <variant>