Fix bad build result comparison.
Fix bad build result comparison.

Also apply https://google.github.io/styleguide/shell.xml and
https://sipb.mit.edu/doc/safe-shell/ while I'm in here.

dlorenc/minikube,kubernetes/minikube,dalehamel/minikube,warmchang/minikube,warmchang/minikube,warmchang/minikube,kubernetes/minikube,dlorenc/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,dlorenc/minikube,dlorenc/minikube,warmchang/minikube,dalehamel/minikube,dlorenc/minikube,warmchang/minikube,dlorenc/minikube,dalehamel/minikube,dlorenc/minikube,kubernetes/minikube,dlorenc/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube