Add handleProvisionSourceChange to cluster id change related code
Add handleProvisionSourceChange to cluster id change related code

Fixes: https://github.com/oVirt/ovirt-web-ui/issues/1308

Call the provision source change handler also when changing the cluster,
which leads to setting the timeZone value and others properly
and fixing the error occurred in the Review step of the CreateVMWizard.

oVirt/ovirt-web-ui,oVirt/ovirt-web-ui,oVirt/ovirt-web-ui