Extend PrivateDnsConfigParcel to carry DoH information and private DNS mode am: 5ce8c90f7d am: dfd3071fd9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2453205

Change-Id: I2c9ccf0b57b500ca7ad904c970c672b8f20e7c43
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>