Closes #324 - Migrate e2e tests to bddframework

[ricardozanini]

Description of the change:
Closes #324

TODO:

• - Implement curling from within the cluster instead of using the Go HTTP library
• - Migrate remaining e2e tests (dev and prod use cases)
• - Migrate Jobs Service use case from [KOGITO-9940] Add E2E test cases for platform configured with Job Service and Data Index in a combination of scenarios with ephemeral and postgreSQL persistence in dev and production profiles #337
• - Update documentation
• - Open an issue to replace the dev mode NodePort service to use LoadBalancer instead for minikube use cases

Motivation for the change:
To deprecate the e2e tests and move forward with our own BDD framework.

Checklist

• Add or Modify a unit test for your change
• Have you verified that tall the tests are passing?

How to backport a pull request to a different branch?

In order to automatically create a backporting pull request please add one or more labels having the following format backport-<branch-name>, where <branch-name> is the name of the branch where the pull request must be backported to (e.g., backport-7.67.x to backport the original PR to the 7.67.x branch).

NOTE: backporting is an action aiming to move a change (usually a commit) from a branch (usually the main one) to another one, which is generally referring to a still maintained release branch. Keeping it simple: it is about to move a specific change or a set of them from one branch to another.

Once the original pull request is successfully merged, the automated action will create one backporting pull request per each label (with the previous format) that has been added.

If something goes wrong, the author will be notified and at this point a manual backporting is needed.

NOTE: this automated backporting is triggered whenever a pull request on main branch is labeled or closed, but both conditions must be satisfied to get the new PR created.

[domhanak]

cc @pibizza

[domhanak]

Closing this and will open a new one as the main branch has diverted a bit.