[Server][DBClientHatohol] Unify using space.
[Server][DBClientHatohol] Add a new variable: targetHostgroupId
[Server][HostResourceQueryOption] Add new conditon for selecting a hostgroup.

Currentry, the HostResourceQueryOption class has the
makeConditionHostgroup function.
But, this function is used for access control.
So, I want to select a hostgroup.