Zabbix

.......... [DEV-2045] added tests for SLA API methods

* commit 'fab483981c63e27d6f9f753d2ad158989d6d1b19':
  .......... [DEV-2045] improved code style - removed empty lines
  .......... [DEV-2045] improved code style: improved spelling, fixed repeated test case labels
  .......... [DEV-2045] registered test; improved code style
  .......... [DEV-2045] improved code style - removed dangling commas
  .......... [DEV-2045] improved code style
  .......... [DEV-2045] added tests for SLA API methods

(cherry picked from commit 91e64755745df7530a3ebcbf57a996719bb77c12)