Keystore 2.0: Implement delete_key in IKeystoreSecurityLevel

Implement delete_key that allows callers to delete Domain::BLOB keys
from the underlying IKeymintDevice. The implementation checks that the
caller has "DELETE" permissions for the key, and has the permissions to
manage key blobs.

Bug: 181820340
Bug: 181910578
Change-Id: I8eb898cd793332e7fcb80558869d3aa5e3aaa2b4
1 file changed