Update DPM.lockNow() flag name.

FLAG_EVICT_CE_KEY -> FLAG_EVICT_CREDENTIAL_ENCRYPTION_KEY

Test: Build success
Test: cts-tradefed run cts-dev -m CtsDevicePolicyManagerTestCases -t com.android.cts.devicepolicy.ManagedProfileTest#testLockNowWithKeyEviction
Bug: 37621349
Change-Id: I9e6199c5f45b0c933f8904e111d3c3da60087f78
1 file changed