add host and thread labels, add data provider for timeline
timeline: group test cases by data from json
Merge pull request #415 from just-boris/executors

Group testcases on timeline by executors
fix - use JVM name with thread id to unique identify thread

Fixes #416 (maybe)
Merge pull request #417 from lanwen/jvm-unique

fix - use JVM name with thread id to unique identify thread