Security update for csync2

This update for csync2 fixes the following issues:

- CVE-2019-15522: Fixed an issue where daemon fails to enforce TLS (bsc#1147137)
- CVE-2019-15523: Fixed an incorrect TLS handshake error handling (bsc#1147139)

This update was imported from the SUSE:SLE-15:Update update project.

Fixed bugs
bnc#1147137
VUL-1: CVE-2019-15522: csync2: daemon fails to enforce TLS
bnc#1147139
VUL-1: CVE-2019-15523: csync2: incorrect TLS handshake error handling
Selected Binaries
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