[VOL-2043] : OLT Enable Test Case

- Added more test cases for OLT Enable. Now covers all scenarios.
- Fixed typos in unit test README.md

Change-Id: Ib931d89cedee78fe40ca67761a028365a047ebc3
diff --git a/agent/test/Makefile.in b/agent/test/Makefile.in
index bc8c91b..ffe5e3b 100644
--- a/agent/test/Makefile.in
+++ b/agent/test/Makefile.in
@@ -158,7 +158,7 @@
 	$(CXX) $(CXXFLAGS) $(CXXFLAGSDEVICE) -I../common -I./inc -I./device/$(OPENOLTDEVICE) -c $< -o $@
 
 test: all
-	./test_openolt --gtest_output="xml:./openolt_test_results.xml"
+	./test_openolt --gtest_output="xml:./test_openolt_report.xml"
 
 clean:
-	rm -f src/*.o lib/*.a ../src/*.o ../common/*.o ./test_openolt  ./openolt_test_results.xml
+	rm -f src/*.o lib/*.a ../src/*.o ../common/*.o ./test_openolt  ./test_openolt_report.xml