Enable instant and ABI XML tags for native networking tests.

These tests include native code so mark them as multi_abi. They
also pass in instant mode so mark them instant_app.

Fix: 123367032
Fix: 123367595
Test: atest CtsNativeNetDnsTestCases CtsNativeNetTestCases
Test: cts-tradefed run commandAndExit cts --enable-parameterized-modules --module-parameter instant_app -m CtsNativeNetDnsTestCases
Test: cts-tradefed run commandAndExit cts --enable-parameterized-modules --module-parameter instant_app -m CtsNativeNetTestCases
Change-Id: Id66705ecb012a07aa34318f41afb1840dd25b9e3