drive_del after device_del in disk hot-remove
drive_del after device_del in disk hot-remove

This is needed so that qemu process really releases the
corresponding file descriptor and thus we can dmsetup/lvremove
the device without errors.

Signed-off-by: Dimitris Aragiorgis <4514117c4a99256e19437c7e3407c4ecbf98aec0@grnet.gr>
Signed-off-by: Thomas Thrainer <98bdeac947eb8ca18146e9ce7f092788ec242cd1@google.com>
Reviewed-by: Thomas Thrainer <98bdeac947eb8ca18146e9ce7f092788ec242cd1@google.com>

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