[MS09] Expose NetworkTemplate APIs which are needed by NetworkPolicy

This change also remove getWifiNetworkKey which should not be exposed
as system API.

Test: atest NetworkTemplateTest
Bug: 204830222
Change-Id: I924f62025a8672167f778ff790cd208c74eed878
2 files changed
tree: fdd42d812358d523032b5873430536d759285d66
  1. core/
  2. framework/
  3. framework-t/
  4. service-t/
  5. services/
  6. tests/