spec: Make driver-qemu require driver-storage

Without that we might get similar messages in the log:

  error : virDriverLoadModule:73 : failed to load module
  /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so
  /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so: undefined
  symbol: virStorageFileCreate
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

libvirt.spec.in

@@ -607,6 +607,7 @@ Group: Development/Libraries
 Requires: libvirt-daemon = %{version}-%{release}
 # There really is a hard cross-driver dependency here
 Requires: libvirt-daemon-driver-network = %{version}-%{release}
+Requires: libvirt-daemon-driver-storage = %{version}-%{release}
 Requires: /usr/bin/qemu-img
 # For image compression
 Requires: gzip