Correctly preserve key generation parameters

Due to an oversight, some of the key generation parameters that are set
in KeyGenParameterSpec were not preserved when parceling the object
(they should have been added to ParcelableKeyGenParameterSpec but were
not).

This means these parameters will be ignored when generating keys using
the DevicePolicyManager.generateKeyPair method, leading to an
inconsistent key generation behaviour between the DevicePolicyManager
and KeyStore.

In particular, this would prevent callers from using StrongBox when
generating keys for use in the KeyChain.

Fix the issue by simply persisting these parameters in
ParcelableKeyGenParameterSpec and making sure that the Builder copies
them too from the source KeyGenParameterSpec.

Left to do is put in place an automated measure to find out
discrepancies between the two classes.

Bug: 110915980
Bug: 110882855
Bug: 109953656
Test: atest KeystoreTests
Change-Id: Ic64bd2921b6dfc97ea34ecba55f532312963ffcb