Fix init bug.
Fix init bug.

When --gcp-user-refresh-token and --share-scope are specified, the user
refresh token wasn't set in the resulting config file.

agoode/cloud-print-connector,avlis/cloud-print-connector,google/cloud-print-connector,201371192/cups-connector,avlis/cloud-print-connector,agoode/cloud-print-connector,avlis/cloud-print-connector,swills/cups-connector,avlis/cloud-print-connector,google/cloud-print-connector,agoode/cups-connector,google/cloud-print-connector,agoode/cloud-print-connector,201371192/cups-connector,agoode/cups-connector,agoode/cloud-print-connector,google/cloud-print-connector,swills/cups-connector