helm install not working with Kubernetes v1.16.0

[jizusun]

I'm using microk8s, and my colleagues who are using minikube have the same issue.

$ microk8s.kubectl version       
Client Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.0", GitCommit:"2bd9643cee5b3b3a5ecbd3af49d09018f0773c77", GitTreeState:"clean", BuildDate:"2019-09-18T14:36:53Z", GoVersion:"go1.12.9", Compiler:"gc", Platform:"linux/amd64"}                                           
Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.0", GitCommit:"2bd9643cee5b3b3a5ecbd3af49d09018f0773c77", GitTreeState:"clean", BuildDate:"2019-09-18T14:27:17Z", GoVersion:"go1.12.9", Compiler:"gc", Platform:"linux/amd64"}  

$ microk8s.helm version                          
Client: &version.Version{SemVer:"v2.14.3", GitCommit:"0e7f3b6637f7af8fcfddb3d2941fcc7cbebb0085", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.14.3", GitCommit:"0e7f3b6637f7af8fcfddb3d2941fcc7cbebb0085", GitTreeState:"clean"}

$ git log -1
commit fc5a81709888954bc73467a27b356038c4f2a54e (HEAD -> master, origin/master, origin/HEAD)
Merge: 26298b9 7fec8f7
Author: Neeraj Laad <neeraj.laad@gmail.com>
Date:   Mon May 20 15:33:58 2019 +0100

    Merge pull request #2 from seabaylea/live-ready

    Make the use of liveness and readiness configurable


$ microk8s.helm install --name nodeserver chart/nodeserver
Error: validation failed: unable to recognize "": no matches for kind "Deployment" in version "extensions/v1beta1"

The reason behind this error should be similar to the one for this issue: helm/helm#6374

[jizusun]

For spec.selector it is also required. so I added into this commit. see: https://serverfault.com/a/917359