[ACS44] Cherry pick for CLOUDSTACK-6399

[Anshul Gangwar]

Hi Daan/Hugo,



Can you please cherry-pick following from 4.4-forward to 4.4:

commit 704f6d8279c314a165199804ee43eaac4b0d482a
Author: Anshul Gangwar <anshul.gang...@citrix.com>
Date:   Fri May 9 14:32:36 2014 +0530

    CLOUDSTACK-6399: When there are no vms running on hyperv host, then agent 
was returning null. In
    that case cloudstack was not doing anything and not updating the state of 
the vms to stopped.
    Now the agent returns empty list of hostvmstatereport. Management server 
will then update the
    vm state to stopped (instead of not acting upon the return state).

Thanks,
Anshul