Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

Also cleans some white spaces

We don't call klog.InitFlags yet, because that will cause a flag
redefinition error until we get everyone to stop using glog.  That
will happen when we update to k8s 1.13.

For cherry-picking to 1.13

https://github.com/kubernetes/kubernetes/blob/release-1.13/build/build-image/cross/Dockerfile

- before I forget why, just adding a link to the issue as to why this here

- fixing the security group detection when using public subnets

- fixing up the goformat for v1.10

- adding some unit testing for the terraform render
- adding the terraform render, updating the autoscaling and creating the launchtemplate

- fixing up the unit test and import of require

- updating the autoscaling group tasks to provision mixed instance policies and templates