events: fix reconnecting to qubesd on its restart
events: fix reconnecting to qubesd on its restart

Since now event listener reports proper QubesDaemonCommunicationError
exception instead of some form of IOError. Include it for automatic
reconnect logic.

Fixes a481490 "app: fix error reporting when connection to qubesd fails"

marmarek/qubes-core-mgmt-client,marmarek/qubes-core-mgmt-client,marmarek/qubes-core-mgmt-client