Kubetest2 - add more validation time for --target terraform
Kubetest2 - add more validation time for --target terraform

Some of the "beforeSuite" tests are failing because the e2e.test binary isn't resolving the API DNS.
This extends the validation time and also adds a sleep to wait for any negative TTLs to expire.

kubernetes/kops,kubernetes/kops,justinsb/kops,justinsb/kops,justinsb/kops,kubernetes/kops