Keesjan Karsten 8539f088f2 Mininet gRPC switch startup reachability check
Just a small change to make sure the gRPC port of simple_switch_grpc
is actually opened after startup, before ONOS gets the netcfg to try
to connect to the switch. Otherwise ONOS will receive a TCP RST from
the still closed port and the connection fails, rendering the switch
devices unavailable. Also included a timeout for port opening.

Change-Id: I1338a4ba24a14be57717f636e684c91c4cb12a7c
2018-01-04 16:08:15 +00:00
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