Fix group sharing tests.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13893 e27351fd-9f3e-4f54-a53b-843176b1656c
Fix group sharing tests.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13894 e27351fd-9f3e-4f54-a53b-843176b1656c
Install caldav perf sim into ServerTools - still need to install caldavclientlibrary though for sim to work


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13895 e27351fd-9f3e-4f54-a53b-843176b1656c
Clean up some WebDAV property apis.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13896 e27351fd-9f3e-4f54-a53b-843176b1656c
add unshare-groups uninvite tests


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13897 e27351fd-9f3e-4f54-a53b-843176b1656c
fix uninviteUIDFromShare(), require CalDAVTester r13897


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13898 e27351fd-9f3e-4f54-a53b-843176b1656c
Tweak for better handling of missing hosts.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13899 e27351fd-9f3e-4f54-a53b-843176b1656c