Refer to SDK constant defined in DevSdkIgnoreRule

Refer to the same constant definition as other tests instead of
hard coding locally, so that it won't be missed as changing to
Build.VERSION_CODES.SC_V2.

Bug: 184750836
Test: atest FrameworksNetTests
Change-Id: I3c17c414d830af03e2719c5dab1a664c55f6df2a
1 file changed