* Split secure key into use case
Allows us to push authentication for key access as late as possible.
* Do not reload if biometric locked
* Linter fixes
* Fix key upgrade scenario
* Fix boolean value message parsing
* Handle systems which don't support biometrics
* Do not fail key retrieval on secret upgrade
* Ensure old key is removed regardless of upgrade success
* Log errors
Thomas Rittson
Matt Gibson
Oscar Hinton