[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/.gitignore b/.gitignore
index 86addb2..da69683 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,7 +26,7 @@
 test_openolt
 
 # Test report
-**/openolt_test_results.xml
+**/test_openolt_report.xml
 
 # IntelliJ Files
 .idea