Add RequiresFeature annotations for IKEv2 VPN profiles

This change adds the @RequiresFeature annotation to Ikev2VpnProfile
Builder methods, and checks before provisioning VPN profiles.

Bug: 156681625
Test: New tests added, passing.
Change-Id: I125d8fbe5d67fb877ad7d0636c007cb3e1a9f59b
Merged-In: I125d8fbe5d67fb877ad7d0636c007cb3e1a9f59b
(cherry picked from commit e84a17dd1706f4c8373047b2023a1ec4b7cf4bf3)
1 file changed
tree: 49881ad0bfadf5de58215ee555b39f825110247c
  1. core/
  2. services/
  3. tests/