test: Refactor end to end test code to enable reuse downstream (#1515)

* Added a test configuration structure

Signed-off-by: Shmuel Kallner <[email protected]>

* Explot new test configuration structure

Signed-off-by: Shmuel Kallner <[email protected]>

* Refactored private test helper functions into common test code

Signed-off-by: Shmuel Kallner <[email protected]>

* Changes due to refactoring of private test helper functions

Signed-off-by: Shmuel Kallner <[email protected]>

* Create RBAC and ConfigMap before deployment

Signed-off-by: Shmuel Kallner <[email protected]>

* Fixed review issues

Signed-off-by: Shmuel Kallner <[email protected]>

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Signed-off-by: Shmuel Kallner <[email protected]>

Author: shmuelk