This removes gating for ironic-inspector and related projects. However,
since ironic-inspector may need a release in case of a catastrophic
security bug, we need to leave a limited number of gate jobs running.
The other inspector-adjacent projects do not have such a need and are
fully removed.
Change-Id: I2dab04113ebc07ca91fa70e64af91dc855d2d5de
Signed-Off-By: Jay Faulkner <jay@jvf.cc>