[updategraph] Use empty configuration when DHCP graphurl option is missing #2185
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- What I did
As we no longer use default minigraph now, change the behavior of updategraph service when DHCP server returns no graphurl option from using default minigraph to generate empty configuration.
- How I did it
dhclient plugin now write 'N/A' instead of 'default' to /tmp/dhcp_graph_url file when no graphurl option is indicated.