Adds the ironic-inspector-status command as well with the
requried upgrade check.
Mostly based upon https://review.opendev.org/#/c/763262/
which is based upon https://review.opendev.org/#/c/748059/
Note: Also had to update the version of eventlet because
existing minimum requirement was seemingly incompatible with
prior versions and would prevent lower constraints testing
to proceed due to issues with ``os`` being patched by eventlet.
Change-Id: I1f479f834f1d79e9eeb591c58a52b6ab80c24534
901c816b23