Address domain verification API comments

Changes package to pm.verify.domain, removes throwing InvalidDomainSet,
cleans up permissions, and renames DomainVerificationSet ->
DomainVerificationInfo.

Bug: 163565712
CTS-Coverage-Bug: 179382047

Test: atest com.android.server.pm.test.verify.domain

Change-Id: I5d60c227f0e529fe27c1844ada97716933a533b0
50 files changed