This update for mosquitto fixes the following issues:

Security issues fixed: 

- CVE-2018-12546: Fixed an issue with revoked access to topics (bsc#1125019).
- CVE-2018-12551: Fixed an issue which allowed malformed data in the password file to be treated as valid (bsc#1125020).
- CVE-2018-12550: Fixed an an issue which treats an empty ACL file  wrongly (bsc#1125021).

This update was imported from the openSUSE:Leap:15.0:Update update project.