Add test for [set|is]BypassableVpn

Bug: 182963397
Test: 1. atest CtsNetTestCases:NetworkAgentConfigTest
      2. atest CtsNetTestCasesLatestSdk:NetworkAgentConfigTest
Change-Id: I0250a0313d3a7561ab8efa851fbc06f5bce11185
1 file changed
tree: ea922035fa42e6f8ff3605998269c22422b31087
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS
  7. TEST_MAPPING