As we are now using flow handle as the key for flow ksync entry,
We need to trigger update Ksync Entry on flow handle change
Also avoid invalidating the flow handle in case of EBADF, since it
will result can result in new index allocation from kernel.

Fixes BUG: #1360030

Change-Id: I8174efbb35c36c3a690b61b6520f2847bf15495f
Merge "As we are now using flow handle as the key for flow ksync entry, We need to trigger update Ksync Entry on flow handle change Also avoid invalidating the flow handle in case of EBADF, since it will result can result in new index allocation from kernel."