Test recoverable Ikev2 errors

Test if retry mechanism is working or not when there is a
recoverable Ikev2 error.

Bug: 229350078
Test: atest FrameworksNetTests:VpnTest
Change-Id: I5e881c6b42aeb98adce598587e2a7e49be7d9643
(cherry picked from commit adb56e94a5fc3c61af10780713f0b7a4f163c965)
Merged-In: I5e881c6b42aeb98adce598587e2a7e49be7d9643
1 file changed