Merge check Device ID logic in DPMS

checkDeviceIdentifierAccess() and
enforceCallerCanRequestDeviceIdAttestation() overlap in terms of
checking if the caller has acces to the device ID. However they each use
different logic for this check. To ensure these two checks are always
in sync, they should call the same underlying code wherever logic can overlap.

Fixes: 220721469
Test: atest com.android.server.devicepolicy.DevicePolicyManagerTest
Test: atest com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testKeyManagement
Test: atest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testDelegatedCertInstallerDirectly
Test:atest android.admin.cts.DevicePolicyManagerTest
Change-Id: Ibe196123640c1d2d29fd62c7c77453c0874fc7a3