[Engineering Task] Split Unit and Integration into separate steps

[gladjohn]

Type of task?

Builds

Description

Currently when a Integ test fail because of external reasons, re-running the failed tests runs the whole test suite (unit and integ), we should split these as 2 different steps so re-run does not run all the tests again

Solution

Split Unit and Integration as 2 different steps in the build pipeline, so re-run does not run all the tests again. This way we can even run them in parallel and speed up the build process