tests: preflight-dut scripting

Will use this to set RCRs and such as part of the test environment run

tests/preflight-dut.lua

@@ -0,0 +1,10 @@
+print("\nTAP: 1..1\n")
+
+-- On-DUT configuration of RCRs.
+-- XXX NOT YET
+-- node.startup{command = '!_init'}
+
+-- Do this in the future so the prompt from dofile gets emitted
+tmr.create():alarm(1, tmr.ALARM_SINGLE, function()
+  print("\nTAP: ok 1 # preflight-dut completed\n")
+end)