Add Docker Hub Registry to default service account in Kubernetes/MiniKube

modifydefaultserviceaccount

# The yaml file 
apiVersion: v1
kind: ServiceAccount
metadata:
  creationTimestamp: 2017-03-30T04:36:20Z
  name: default
  namespace: default
  selfLink: /api/v1/namespaces/default/serviceaccounts/default
  uid: 6bd2e599-1502-11e7-9a0e-080027e762a7
secrets:
- name: default-token-r5jv1
imagePullSecrets:

#this is the name of my custom registry entry previously created
- name: dockerhubregistry 

#change the default account info with new settings from the file 
kubectl replace serviceaccount default -f ./sa.yaml