Migrate to networkCreate RPC

1. networkCreatePhysical and networkCreateVpn were deprecated. Use
networkCreate RPC when it is supported by platform.

2. The deprecated RPCs are still referenced in backward compatibility
tests (on Android R image). In that case, use deprecated RPCs and
temporarily ignore -Wdeprecated-declarations.

3. Generalize helper function isRemoteVersionSupported() so that it can
take arbitrary AIDL services.

Bug: 171872481
Test: atest
Original-Change: https://android-review.googlesource.com/1714188
Merged-In: I68ceab87ab1a95b47b3fb58988cff1f961d18c1a
Change-Id: I68ceab87ab1a95b47b3fb58988cff1f961d18c1a