This adds a safety check and detection mechanism to the
tools/test_format_inspector.py utility for verifying those features
outside of glance.
Change-Id: I447e7e51315472f8fa6013d4c4852f54c1e0c43d
(cherry picked from commit b27040b87e43ff4acfb6870ef0d13d54e5ca5caa)
(cherry picked from commit b394ef00c3426771092d099cf1d96077bfa4b919)
(cherry picked from commit aa12d39b453068d9ee8367591eb60d4a15cddece)
(cherry picked from commit a1c94b47d0)