Make qubesd-query-fast support keyword targets
Make qubesd-query-fast support keyword targets

Specifically, allow to use `@default` and `@adminvm` as a target.

marmarek/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,QubesOS/qubes-core-admin,QubesOS/qubes-core-admin