Changes

Increase networking test endpoint wait to 3 minutes
There are existing issues where we see the kubelet misses a sync loop 
and needs to re-try one or two minutes later, so it is not appropriate 
to wait for an endpoint for less than three minutes as this wait does 
not guarantee that a correctly-functioning system will converge on the 
correct behavior.
Signed-off-by: Steve Kuznetsov <skuznets@redhat.com>
 (commit: 0fd4f52)