Extension takes several minutes to start if the current `~/.kube/config` context is an inaccessible cluster

[datho7561]

If you set your ~/.kube/config to point to an inaccessible cluster, then the extension takes several minutes to start up.

[datho7561]

I can no longer reproduce the issue, it was probably fixed by 7ac9b15

[vrubezhny]

@datho7561 However it still takes quite a long to start for me when previously I was connected to an OS cluster which isn't available by the time of new start - for sure it takes more than a minute to start up and get ready to login/show components and hangs up/forces waiting on a try to expand some any components' item. (However yes, previously it was taking "ages" to start).

When debugged, I stopped on timeout (which is of 5 seconds) at the LoginUtils.requireLogin()'s error catch after about 1 minute waiting, so I suppose we still need some investigation on what's blocking up on start up.