cockpit-client: add .is_ephemeral=True to WebView
cockpit-client: add .is_ephemeral=True to WebView

It doesn't make sense for cockpit-client to be doing any caching at all.
Disable this.

cockpit-project/cockpit,cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit,martinpitt/cockpit,mvollmer/cockpit,mvollmer/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,mvollmer/cockpit