Add gtest cases to verify sd_event timer

Change-Id: I6db746adc969a322f463c00143938c7c2339ff86
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/softoff/Makefile.am b/softoff/Makefile.am
index aafce74..b8266b3 100644
--- a/softoff/Makefile.am
+++ b/softoff/Makefile.am
@@ -25,3 +25,5 @@
 xyz/openbmc_project/Ipmi/Internal/SoftPowerOff/server.hpp: ${top_srcdir}/xyz/openbmc_project/Ipmi/Internal/SoftPowerOff.interface.yaml
 	@mkdir -p `dirname $@`
 	$(SDBUSPLUSPLUS) -r $(top_srcdir) interface server-header xyz.openbmc_project.Ipmi.Internal.SoftPowerOff > $@
+
+SUBDIRS = test