add dynamic library interface to enable testing

Add interface defining the methods for dynamic linking to enable
testing.

Change-Id: If4d090d3cedc019b426435a1f651191803bfc1a9
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/test/Makefile.am b/test/Makefile.am
index 5e0cdb0..0d36509 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -35,7 +35,9 @@
 	manager_read_unittest \
 	manager_writemeta_unittest \
 	process_unittest \
-	crc_unittest
+	crc_unittest \
+	utils_unittest
+
 TESTS = $(check_PROGRAMS)
 
 ipmi_unittest_SOURCES = ipmi_unittest.cpp
@@ -116,3 +118,6 @@
 
 crc_unittest_SOURCES = crc_unittest.cpp
 crc_unittest_LDADD = $(top_builddir)/crc.o
+
+utils_unittest_SOURCES = utils_unittest.cpp
+utils_unittest_LDADD =  $(top_builddir)/utils.o $(PHOSPHOR_LOGGING_LIBS)