Make destroying networks more robust.

1. Retry route flushes if they fail.
2. Make destroyNetwork ignore (but return) errors.

Bug: 16944962
Change-Id: I26301613437d7cc373ff64955fd44d716e9982b9
2 files changed
tree: 490f67430aad333ef39a55a68a83bf5b11f75d5b
  1. client/
  2. include/
  3. server/