odo url create/delete output always references OpenShift clusters

[johnmcollier]

/kind bug
/area devfile
/priority low

When running odo url create or odo url delete against a devfile component, odo shows the following output, even if running against a non-OpenShift cluster:

Johns-MacBook-Pro-3:springboot johncollier$ odo url create --host my-host.com
 ✓  URL created for component: maven, cluster host: my-host.com

To create URL on the OpenShift Cluster, please use `odo push`

and

Johns-MacBook-Pro-3:springboot johncollier$ odo url delete maven-8080
? Are you sure you want to delete the url maven-8080 Yes
 ✓  URL maven-8080 removed from the env file

To delete URL on the OpenShift Cluster, please use `odo push`

[kadel]

We should start using just "cluster" no Kubernetes or OpenShift to make our life easier and avoid any confusions

[johnmcollier]

/assign