- Add default network priority to NetworkRequestInfo. - The default network priority value is used when issue uid ranges rules to netd. Netd will use the priority value and uid ranges to generate corresponding ip rules specific to the given network preference. Bug: 171872461 Test: atest FrameworksNetTests Ignore-AOSP-First: Needs cherry-picks Change-Id: I0ea71b348492aeb4784d487bed4cfd5d387426ba