COPE: Allow use of password quality API

Allow the Device Policy Client of a company-owned, personally-enabled
device to device-wide set password requirements using the
deprecated password quality API.

DPC of a work profile on a personal device still cannot use the
deprecated API device-wide.

Bug: 165573442
Test: atest com.android.cts.devicepolicy.OrgOwnedProfileOwnerTest#testDevicePolicyManagerParentSupport
Change-Id: Icac0cc9028e760d8470e03f3e91386f667646c7f