Add script for testing RP network connectivity

rp_ping_test

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# RedPitaya hostname
+export RP_HOST=rp-f0612e
+
+# Check if RedPitaya becomes connectable from network by pinging
+while true
+do
+    ping $RP_HOST -c 1 >/dev/null 2>/dev/null && break
+done
+# Print time when RedPitaya ready on network
+TIMESTAMP_PRETTY=$(date '+%Y-%m-%d %H:%M:%S')
+echo "RP becomes connectable at $TIMESTAMP_PRETTY."