Add support for individual property update

SNMP Manager D-Bus object doesn't have support
for individual D-Bus property update.
This commit adds the support for the same.

Resolves openbmc/phosphor-snmp#2

Change-Id: Ic72366b6b18190e66e23d400a5f2c95037947809
Signed-off-by: Ratan Gupta <ratagupt@linux.vnet.ibm.com>
diff --git a/test/Makefile.am.include b/test/Makefile.am.include
index 97b018c..9bbf050 100644
--- a/test/Makefile.am.include
+++ b/test/Makefile.am.include
@@ -31,7 +31,8 @@
 	%reldir%/test_error_notification.cpp \
 	%reldir%/test_snmp_conf_manager.cpp \
 	%reldir%/test_snmp_util.cpp \
-	%reldir%/test_snmp_serialize.cpp
+	%reldir%/test_snmp_serialize.cpp \
+	%reldir%/test_snmp_client.cpp
 
 test_notification_LDADD = $(top_builddir)/phosphor_network_snmpconf-snmp_conf_manager.o \
 	$(top_builddir)/phosphor_network_snmpconf-snmp_client.o \