Do not return early on get-kube.sh errors in extract_k8s.go
Do not return early on get-kube.sh errors in extract_k8s.go

Eliminates check that returns early after 3 get-kube.sh errors in order
to actually attempt to run all 5 times.

Signed-off-by: hasheddan <fff88e83cd964a817f9e74a48f8df9cd0b6b9759@gmail.com>

cblecker/test-infra,fejta/test-infra,cblecker/test-infra,michelle192837/test-infra,michelle192837/test-infra,jessfraz/test-infra,pwittrock/test-infra,kubernetes/test-infra,jessfraz/test-infra,brahmaroutu/test-infra,cjwagner/test-infra,kubernetes/test-infra,cjwagner/test-infra,BenTheElder/test-infra,cjwagner/test-infra,cblecker/test-infra,fejta/test-infra,jessfraz/test-infra,cblecker/test-infra,michelle192837/test-infra,monopole/test-infra,fejta/test-infra,brahmaroutu/test-infra,monopole/test-infra,fejta/test-infra,pwittrock/test-infra,monopole/test-infra,kubernetes/test-infra,brahmaroutu/test-infra,dims/test-infra,fejta/test-infra,cblecker/test-infra,fejta/test-infra,BenTheElder/test-infra,BenTheElder/test-infra,cjwagner/test-infra,monopole/test-infra,kubernetes/test-infra,michelle192837/test-infra,BenTheElder/test-infra,dims/test-infra,brahmaroutu/test-infra,jessfraz/test-infra,pwittrock/test-infra,cjwagner/test-infra,michelle192837/test-infra,BenTheElder/test-infra,cblecker/test-infra,kubernetes/test-infra,monopole/test-infra,pwittrock/test-infra,pwittrock/test-infra,jessfraz/test-infra,brahmaroutu/test-infra,cjwagner/test-infra,monopole/test-infra,BenTheElder/test-infra,brahmaroutu/test-infra,dims/test-infra,dims/test-infra,kubernetes/test-infra,dims/test-infra,dims/test-infra,michelle192837/test-infra,jessfraz/test-infra