CTS tests - Credential management app follow ups

* CTS tests for KeyChain APIs isCredentialManagementApp
  and getCredentialManagementAppPolicy.

Bug: 177979648
Test: atest android.devicepolicy.cts.CredentialManagementAppTest
Change-Id: I97ff783920f8bc6452345b69a34086e0a80d2ea6
1 file changed