Revert snap MongoDB from v3.2.18 back to v3.2.16 because of SSL cert error. Trying to fix snap build.
Revert snap MongoDB from v3.2.18 back to v3.2.16 because of SSL cert error. Trying to fix snap build.

libreboard/libreboard,wekan/wekan,GhassenRjab/wekan,johnleeming/wekan,wekan/wekan,johnleeming/wekan,GhassenRjab/wekan,nztqa/wekan,nztqa/wekan,libreboard/libreboard,wekan/wekan,johnleeming/wekan,nztqa/wekan,wekan/wekan,johnleeming/wekan,GhassenRjab/wekan,wekan/wekan