Future work in the UI requires Apache to proxy for the
ironic-inspector service the same as it has for other
related services. This adds support for ironic-inspector
through Apache's mod_proxy
Closes-Bug: 1695202
Depends-On: Id395604f1dfbc4bf4f26adbe05f484a10227fd76
Change-Id: I9dcb0769ff90a2fc9561cb86bb822be8087ffe8e