Zabbix

..F.....S. [ZBXNEXT-2663] Support SAML authentication in zabbix frontend

* commit '52eb3d038ddc404a63a9b7e1fdc21c7df6f7c23e': (27 commits)
  ..F....... [ZBXNEXT-2663] fixed undefined variable error
  ..F....... [ZBXNEXT-2663] made the "SP entity ID" field mandatory
  ....I...S. [ZBXNEXT-2663,ZBXNEXT-5836] fixed dbversion
  .......... [ZBXNEXT-2663] fixed schema.tmpl
  ..F.....S. [ZBXNEXT-2663] removed metadata checkbox from UI and DB
  ..F....... [ZBXNEXT-2663] fixed maxlength for saml auth fields
  ..F....... [ZBXNEXT-2663] fixed values trim
  ..F....... [ZBXNEXT-2663] fixed username attribute input maxlength
  ..F....... [ZBXNEXT-2663] made SAML SLO optional
  ..F....... [ZBXNEXT-2663] reverted unnecessary changes in 5d0bf3adf55
  A.F....... [ZBXNEXT-2663] merged the loginHttp() and loginSso() methods of the CUser class into a new one named loginByAlias()
  ..F....... [ZBXNEXT-2663] added support for custom SAML authentication settings from $SSO['SETTINGS']
  ..F....... [ZBXNEXT-2663] made private key and certificate files to be read from default paths only if no custom paths are set
  ..F....... [ZBXNEXT-2663] added support for SAML SLO
  ..F....... [ZBXNEXT-2663] removed redundant variable
  ..F....... [ZBXNEXT-2663] fixed user with no access to frontend being redirected to login page without any errors
  ..F....... [ZBXNEXT-2663] made $SSO parameters optional and commented them out in config file
  ..F....... [ZBXNEXT-2663] fixed hardcoded URLs
  A.F....... [ZBXNEXT-2663] added ability to login using SAML SSO
  ..F....... [ZBXNEXT-2663] introduced new directory "vendor" for 3rd party libraries; included OneLogin SAML PHP toolkit and xmlseclibs library as its dependency
  ...