Pass hostname to console/telnet/ssh option

[christung16]

Is your feature request related to a problem? Please describe.
Request to pass "node name" into the VIRL_CONSOLE_COMMAND, VIRL_TELNET, VIRL_SSH so that when I open many telnet terminals to different devices, it can have the hostname show up on each windows.

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[kecorbin]

Would that require that the node names be resolvable by DNS? ie, ssh cisco@myrouter