Merge DatastoreAccess executeRpc and executeAction

Sysrepo now uses the same method for rpc and action.

Change-Id: I3a8211b670189c9724d46d6235e5a68b3107c81a
diff --git a/tests/datastoreaccess_mock.hpp b/tests/datastoreaccess_mock.hpp
index 751cdad..e708149 100644
--- a/tests/datastoreaccess_mock.hpp
+++ b/tests/datastoreaccess_mock.hpp
@@ -24,8 +24,7 @@
     IMPLEMENT_MOCK1(createItem);
     IMPLEMENT_MOCK1(deleteItem);
     IMPLEMENT_MOCK2(moveItem);
-    IMPLEMENT_MOCK2(executeRpc);
-    IMPLEMENT_MOCK2(executeAction);
+    IMPLEMENT_MOCK2(execute);
 
     // Can't use IMPLEMENT_MOCK for private methods - IMPLEMENT_MOCK needs full visibility of the method
     MAKE_MOCK1(listInstances, std::vector<ListInstance>(const std::string&), override);