[ArmBase] Add a queue to make sure to run all jobs of fetching items
[ArmBase][DataStoreZabbix] Add skeleton of functions to run fetching history
[ArmBase] Store query parameters of fetching history
[ArmBase] Add a missing space
[ArmBase][ArmZabbixAPI] Enable to fetch history
[ArmBase] Remove needless functions and tests
[ArmZabbixAPI] Fix a wrong server ID value
[ArmZabbixAPI] Align position of return statement in mainThreadOnProc*()
[testArmZabbixAPI] Fix a failed test
[ArmBase] Call appropriate FetcherJob::run() at destructor
[ArmZabbixAPI] Fix indent
[ArmBase] Allow NULL closure for fetchItems()
[ArmBase] Rename a function

mainThreadOneProcFetchItem ->
mainThreadOneProcFetchItems
[testArmBase] Add a test for fetchItems()
[testArmBase] Test a closure for fetchItems()
[ArmBase] Add test_fetchHistory()
[testArmBase] Remove needless space
[testArmZabbixAPI] Add test_oneProcFetchHistory()
[ArmBase] Check FetcherJob pointer before use it
Merge pull request #734 from project-hatohol/get-history-arm-zabbix

Enable to get history via ArmZabbix