Fix microversion compatibility issue for OpenStack Baremetal API

[skanthed]

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[skanthed]

@tzumainn I’m unable to select you as reviewer to this PR directly. Could you please check if I can be given the necessary permissions to do so for this repo?

[tzumainn]

Ah, I don't think this is the change we need - first, I think our version of Ironic doesn't go up to 1.72; second, the core issue is that the version set there isn't being passed into the call to Ironic; I suspect something needs to be set in the esisdk. Make sure you test in a clean python environment, first verifying that if you unset OS_BAREMETAL_API_VERSION then a command like openstack esi node network list will fail; then verifying it passes with whatever changes you make!