Zabbix

...G...PS. [ZBXNEXT-3604] added support of user configurable ciphers for communication between Zabbix components

* commit '8188c7e4addca05b3e947799c6a8580125b46dcb':
  .......... [ZBXNEXT-3604] added ChangeLog entry
  ...G...PS. [ZBXNEXT-3604] fixed priorities: command-line parameters --tls-cipher13 and --tls-cipher override parameters from configuration file
  ...G...PS. [ZBXNEXT-3604] disallowed empty strings as TLS*13 parameter values
  ...G...PS. [ZBXNEXT-3604] removed unnecessary code from zbx_tls_parameter_name()
  ...G...PS. [ZBXNEXT-3604] fixed error checking if parameters TLSCipherPSK* and TLSCipherAll* cannot be applied
  ...G...PS. [ZBXNEXT-3604] fixed help messages
  .D........ [ZBXNEXT-3604] updated man-pages
  ...G...PS. [ZBXNEXT-3604] improved error and help messages
  ...G...PS. [ZBXNEXT-3604] added TLSCipher parameters to zbxmocktest.c to fix linking
  ...G...PS. [ZBXNEXT-3604] added validation of TLSCipher parameters
  ...G...PS. [ZBXNEXT-3604] added TLSCipher parameters to override OpenSSL ciphersuite settings
  ...G...PS. [ZBXNEXT-3604] added TLSCipher parameters to override GmuTLS ciphersuite settings
  ...G...... [ZBXNEXT-3604] added TLSCipher parameters to zabbix_get configuration
  ...G...... [ZBXNEXT-3604] added TLSCipher parameters to sender configuration
  ...G...... [ZBXNEXT-3604] added TLSCipher parameters to agent configuration
  .......P.. [ZBXNEXT-3604] added TLSCipher parameters to proxy configuration
  ........S. [ZBXNEXT-3604] added TLSCipher parameters to server configuration
  ...G...PS. [ZBXNEXT-3604] added TLSCipher parameters to configuration file samples

(cherry picked from commit c5059c620d01f1122cf36c9f901cd3f73def7a1c)