[Server][DBClientHatohol] Change structure name.

HostsGroupsInfo        ->
MapHostsHostgroupsInfo
[Server][DBClientHatohol] Change structure name.

    GroupInfo ->
HostgroupInfo
[Server][ArmZabbixAPI] Change function name.

makeHatoholGroups     ->
makeHatoholHostgroups
[Server][ArmZabbixAPI] Change function name.

updateGroups     ->
updateHostgroups
[Server][ArmZabbixAPI] Change the function name.

getGroups     ->
getHostgroups
[Server][ArmZabbixAPI] Change the function name.

queryGroup     ->
queryHostgroup