[server][testDBClientHatohol] Split off tests for HostResourceQueryOption too.
[server][HostResourceQueryOption] Add two stub methods.
[server][HostResourceQueryOption] Arrange the placement order of methods.
[server][DBClientHatohol] Call the copy constructor for improving performance by sharing a DataQueryContext instance.
[server][testDBClientHatohol] Add a test for the copy constructor of EventQueryOption.
[servers][Helpers] Move fixupForFilteringDefunctServer() to Helpers so that other tests can use it.
[server][testHostResourceQueryOptionSubClasses] Add a new test namespace for the subclasses of HostResourceQueryOption.
[server][testHostResourceQueryOption] Move tests concerned with HostResourceQueryOption from testDBClientHatohol.
[server][testDBClientHatohol] Use a defined type instead of a native type.
[server][testiHostResourceQueryOption] Use a defined type instead of a native type.
[server][DBClientHatohol] Adjust indent.
[server][DBClientHatohol] Add comments to make an area of each class clear.
Fix the required version of cutter.
[server][test] Fix missings of DB setup.
[server][TriggersQueryOption] Pass the source object to share a DataQueryContext instance.
[server][ItemsQueryOption] Pass the source object to share a DataQueryContext instance.
[server][FaceRest] Replace an option instance, because I will deprecate deprecate a direct use of HostResourceQueryOption.
[server][testHostResourceQueryOptionSubClasses] Extract inner methods so that other other methods can use them.
[server][testHostResourceQueryOptionSubClasses] Place related methods near by.
[server][testHostResourceQueryOptionSubClasses] Check the members in the PrivateContext.