In the `createTests` method handle existing tests

[nitish24p]

According to me this is a little bit tricky

Consider case below

Day1

{
  name: 'Red Button',
  duration: 15,
  percentage: 80
}, {
  name: 'Green Dropdown',
  duration: 10,
  percentage: 5
}

This is your config

You make a fresh deployment after 5 days, the above config should be

{
  name: 'Red Button',
  duration: 10,
  percentage: 80
}, {
  name: 'Green Dropdown',
  duration: 5,
  percentage: 5
}

Also if i manually change the config to just

{
  name: 'Red Button',
  duration: 10,
  percentage: 80
}

The green dropdown test should get cleared, and all the data associated with it. Implementation of this is up for discussion