gpg key import not working in Qubes

[redshiftzero]

Description

This was found while testing the securedrop-client-0.0.7 deb package in sd-svs, it looks like import of keys is not working, which means that encrypting a reply to a source won't work

STR

0. start the client in Qubes
1. submit a new document as a source
2. click refresh

Expected behavior

source key is imported

Actual behavior

The following log line appears:

qubes-gpg-client: unrecognized option '--import-options'

[redshiftzero]

(this isn't obvious due to the behavior described in #365)

[redshiftzero]

we should use qubes-gpg-import-key for these import operations and then modify the qubes RPC policies to allow GpgImportKey from sd-svs (source) to sd-gpg (dest)