[SOGo] Thunderbird icloud contacts sync - not working with latest connectors nightlies

[J Land]

Trying to sync Thunderbird addressbook with icloud contacts (carddav 
protocol).  Have tried the latest nightlies, but still no success.

Have tried variations of the icloud url to no avail.
icloud contacts sync works flawlessly with emClient using 
https://contacts.icloud.com, but no url works with Thunderbird/sogo 
connectors.

Has anyone gotten Thunderbird / icloud contact sync working?  Please advise.

Thank you.

Regards, Jeff
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