Extend PrivateDnsConfigParcel to carry DoH information and private DNS mode

1. Add 5 fields in PrivateDnsConfigParcel.
2. Add @JavaDerive(equals=true) for PrivateDnsConfigParcel.
3. Run `m networkstack-aidl-interfaces-update-api` to update
   the aidl_interface.

Bug: 240259333
Bug: 261404136
Test: mm
Change-Id: Ib4f996457b9560c8233dae202f13e78dc74a5434
2 files changed