mtu: Add MTU parameter to Routes

- Change route to update existing route
- MTU parameter added to AddRoute

Bug: 142892223
Test: unit test
Change-Id: Ie339d0cee5be12c2232a4631fed61219a0facc64
4 files changed
tree: 23672bc47936e7155b9da2d3c15b75548f645a2e
  1. core/
  2. services/
  3. tests/