Merge pull request #1 from chjwang/master

Add  test scenarios (WIP)
Merge pull request #2 from chjwang/master

Get Keystone token dynamically for each test scenario, refactor test sce...
Refactored runner
Refactored runner
Merge branch 'master' of https://github.com/AlexanderChudnovets/magnetodb-test-bench
add kvaasloader test scenario