Add persistency for events

Persist event D-bus objects using cereal

Resolves openbmc/openbmc#2319

Change-Id: Ifa15d944fe1d1026761f65eeb647dcbdf6afdba0
Signed-off-by: Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com>
diff --git a/src/test/Makefile.am b/src/test/Makefile.am
index 717bacc..8f3cd02 100644
--- a/src/test/Makefile.am
+++ b/src/test/Makefile.am
@@ -199,4 +199,5 @@
 	$(builddir)/../elog.o \
 	$(builddir)/../resolve_errors.o \
 	$(builddir)/../event_manager.o \
+	$(builddir)/../event_serialize.o \
 	-lstdc++fs