Add NetworkRequest#satisfiedBy to SystemApi

The API is useful for NetworkFactories to select requests based on
capabilities.
This mirrors NetworkCapabilities#satisfiedByNetworkCapabilities

Test: m
Bug: 138306002
Merged-In: I1d4a928256951397cabde5c352a872fd48d85859
Change-Id: I1d4a928256951397cabde5c352a872fd48d85859
(clean cherry-pick from internal branch)