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/test/end2end/logging.cpp b/test/end2end/logging.cpp
new file mode 100644
index 0000000..2833766
--- /dev/null
+++ b/test/end2end/logging.cpp
@@ -0,0 +1,15 @@
+#include <attn/logging.hpp>
+
+#include <iostream>
+
+namespace attn
+{
+
+/** @brief Log message of type INFO using stdout */
+template <>
+void log<INFO>(const char* i_message)
+{
+    std::cout << i_message;
+}
+
+} // namespace attn