return total disk space as our hdd quota for now. Bug 1937
return total disk space as our hdd quota for now. Bug 1937

UI wants uniform responses on ram and hdd resources, so to keep it
happy we need quotaTotal field. The best thing that we can do is to
use total space size there.

Change-Id: I25b45247d11088ac98e591710e1e0b151c96c996
Reviewed-on: http://review.northscale.com/1624
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

t3rm1n4l/ns_server,t3rm1n4l/ns_server,vzasade/ns_server,membase/ns_server,pavel-blagodov/ns_server,membase/ns_server,pavel-blagodov/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,ceejatec/ns_server,daverigby/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,nimishzynga/ns_server,vzasade/ns_server,vzasade/ns_server,mschoch/ns_server,daverigby/ns_server,vzasade/ns_server,ceejatec/ns_server,daverigby/ns_server,nimishzynga/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,nimishzynga/ns_server,membase/ns_server,ceejatec/ns_server,nimishzynga/ns_server,daverigby/ns_server,membase/ns_server,daverigby/ns_server,ceejatec/ns_server,nimishzynga/ns_server,nimishzynga/ns_server