Add hidden KeyProtection API to specify SID

Allows the caller to specify which SID the given key
should be bound to, overriding the default rule of
binding to the current root/fingerprint SID.

This is a prerequsite for introducing synthetic password
based authentication flow.

Test: cts-tradefed run cts -m CtsKeystoreTestCases
Bug: 33126414
Change-Id: Ide03c0f4fd33ecca7a169ea763c3d4d0b173d1dd