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/meson.build b/test/meson.build
index 76aa354..1704f17 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -1,3 +1,6 @@
+# end2end code exerciser for experiment and testing
+subdir('end2end')
+
 tests = [
   'hello-world',
 ]