Use ints instead of strings to represent user-ids
Use ints instead of strings to represent user-ids

Signed-off-by: Balazs Lecz <024c580adbe3324c61e798a30c60cf94ec02e89f@google.com>
Reviewed-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>

ganeti/ganeti,mbakke/ganeti,andir/ganeti,apyrgio/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,mbakke/ganeti,leshchevds/ganeti,yiannist/ganeti,apyrgio/snf-ganeti,leshchevds/ganeti,apyrgio/snf-ganeti,bitemyapp/ganeti,apyrgio/ganeti,yiannist/ganeti,grnet/snf-ganeti,ganeti/ganeti,grnet/snf-ganeti,yiannist/ganeti,andir/ganeti,andir/ganeti,dimara/ganeti,onponomarev/ganeti,bitemyapp/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,leshchevds/ganeti