Upgrading Edge-LB

Perform an Edge-LB upgrade by following this procedure.

Uninstall the apiserver.
```
dcos package uninstall edgelb --yes
```

Remove the old package repositories.

dcos package repo remove edgelb
dcos package repo remove edgelb-pool

Add the new package repositories.

dcos package repo add --index=0 edgelb \
  https://<insert download link>/stub-universe-edgelb.json
dcos package repo add --index=0 edgelb-pool \
  https://<insert download link>/stub-universe-edgelb-pool.json

Install the new apiserver. Use the service account created when installing the previous version; see Edge-LB Installation Guide for more information. The configuration file below matches the one created while following the install instructions above.
```
tee edgelb-options.json <<EOF
{
  "service": {
    "secretName": "dcos-edgelb/edge-lb-secret",
    "principal": "edge-lb-principal",
    "mesosProtocol": "https"
  }
}
EOF
dcos package install --options=edgelb-options.json edgelb
```
EdgeLB also needs the following options to be specified. Their values depend on the security mode of the cluster it is running on:
- service.mesosProtocol: "https" for Permissive and Strict security modes, "http" (default) for Disabled security mode
- service.mesosAuthNZ: true (default) for Permissive and Strict security modes, false for Disabled security mode. Parameter is available begining version v1.1.
Upgrade each pool.
```
dcos edgelb update <pool-file>
```

Upgrading an Edge-LB installation