[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/inc/bal_mocker.h b/agent/test/inc/bal_mocker.h
index 99be959..85bdb22 100644
--- a/agent/test/inc/bal_mocker.h
+++ b/agent/test/inc/bal_mocker.h
@@ -19,11 +19,22 @@
 #define __BAL_MOCKER_H__
 #include <cmock/cmock.h>
 #include <cstdlib>
+extern "C" {
+#include <bcmos_system.h>
+#include <bcmolt_api.h>
+#include <bcm_dev_log.h>
 #include "bcmos_errno.h"
-#include "bcmolt_host_api.h"
 #include "bcmolt_system_types_typedefs.h"
 #include "bcmolt_msg.h"
 
+/** Host subsystem initialization parameters */
+typedef struct bcmolt_host_init_parms
+{
+    int dummy;
+} bcmolt_host_init_parms;
+
+}
+
 class BalMocker : public CMockMocker<BalMocker>
 {
 public: