Added end2end test case

Added end2end test case for exercising code from attention event to isolator.

Signed-off-by: Ben Tyner <ben.tyner@ibm.com>
Change-Id: I5bde1c50e4b70e284e99e71bb69d55041310c0d0
diff --git a/attn/logging.hpp b/attn/logging.hpp
new file mode 100644
index 0000000..9a4b0dc
--- /dev/null
+++ b/attn/logging.hpp
@@ -0,0 +1,21 @@
+#pragma once
+
+namespace attn
+{
+
+/** @brief Logging level types */
+enum level
+{
+    INFO
+};
+
+/**
+ * @brief Log message of different types
+ *
+ * Log messages of different types (level) such as informational, debug,
+ * errors etc.
+ */
+template <level L>
+void log(const char* i_message);
+
+} // namespace attn