Update KeyStore tests to account for software digesting.

When the hardware keymaster doesn't support all digest modes, Keystore
will insert NONE for digest and possibly padding, in order to allow
software digesting.  This broke some of the tests, which didn't expect
the additional authorizations.

Bug: 22529223
Change-Id: I072b5fb6e6dff2cf13b70d05030a7491aecad898
2 files changed