Expand thornode disk size to 1TB

Closes #53 (closed)

for old AWS EKS cluster , need to check whether the storage class allow volume expansion run kubectl get sc

NAME            PROVISIONER             RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
gp2 (default)   kubernetes.io/aws-ebs   Delete          WaitForFirstConsumer   false                   219d

if AllowVolumeExpansion is false , then it need to patch the storage class first

kubectl patch sc gp2 -p '{"allowVolumeExpansion": true}'