Announcement Date: 24 March, 2021

Improvements:
[cluster] remove azure account after deleting azure cluster configuration

Bugfixes:
[farms] changed function from checkport to validatePort
[ssl] Letsencryptz forced to use HTTP challenge
[cluster] fixed IP announce in Master node, it is not performed when the backup node is started
[cluster] fixed restart farm on the backup node
[networking] fixed Nonexistent NIC Interface Configuration File is not removed