MaaS: Reduce C/D timeouts, minor fixes

MaaS: Reduce C/D timeouts, minor fixes

- add new patch for maas.region, extending it poorly with a timeout
  override mechanism; the new comissioning/deploying timeout defaults
  (10/15min) will be used instead of MaaS defaults (20/40min), unless
  reclass params are defined with different values;
- add 30s delay between 'machine mark-broken' and 'machine mark-fixed'
  MaaS cli commands (fixes a rare race condition);
- fix forgotten replace in 'maas.pxe_route': s/opnfv_fuel_/opnfv_/g;

Change-Id: I71c562b80031bac2793dd470d52928c2d62e5300
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>