JFG-321 Create collector for metrics
Added support metric collector in custom schema
JFG-345 impossible to run jagger with termination strategy duration
Refactor of the code
JFG-346 Workload termination (users)
If a user creates with a delay greater than the lifetime - a test will not work correctly
Fix typo
Renamed CompositeCollector -> CompositeMetricCollector
refactored CompositeMetricCollector(2 collectors -> list)
Merge pull request #127 from nmusienko/master

JFG-321 Create collector for metrics