The test was observed to be flaky when sending a single packet.
Sending three packets increases the likelihood of the test's
assertion passing reliably, addressing potential timing issues
or packet loss.
Flag: EXEMPT test only
Bug: 419427388
Test: atest CtsConnectivityMultiDevicesTestCases:ApfV6Test --iteration 10
Change-Id: I42426d49a81871e6c8e275b1bd8cb0964290ce17