As a user I should be able to create a test suite

[vikrant47]

Create table test_sutes as follows

id : integer
name : string
environment_config: text (jsonable)
before: text (script)
after: text (script)
before_each: text (script)
after_each: text (script)
plugin_id: integer 

Create table tests as follows

id : integer
name : string
before: text (script)
after: text (script)
before_each: text (script)
after_each: text (script)
test_suite_id : integer
plugin_id: integer 

Create table test_cases as follows

id : integer
name : string
test_id : integer
script: text 
plugin_id: integer 

[vikrant47]

Functionality to be done

• Add service to run database test cases. This service will read testcase data from main database and will run these test case on test database.
• Allow user to select and run test suite or test or a single test case from front-end.