tests: Add initial osmo_io tests

Change-Id: Ia67629e53f4d2e5784177250d58e268fdfcaa0c2
diff --git a/tests/osmo_io/osmo_io_test.ok b/tests/osmo_io/osmo_io_test.ok
new file mode 100644
index 0000000..745e36a
--- /dev/null
+++ b/tests/osmo_io/osmo_io_test.ok
@@ -0,0 +1,8 @@
+Running test_connected
+ep1: write() returned rc=16
+ep2: read() msg with len=16
+01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 
+Running test_unconnected
+ep1: sendto() returned rc=16
+ep2: recvfrom() msg with len=16
+01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10