Reverting some commits causing test failures

[hakuna-matatah]

Issue #, if available: Reverting these commits as pods scheduling is failing since this change and failing our tests consistently

• https://github.com/awslabs/kubernetes-iteration-toolkit/pull/427
• https://github.com/awslabs/kubernetes-iteration-toolkit/pull/431
• https://github.com/awslabs/kubernetes-iteration-toolkit/pull/434
• https://github.com/awslabs/kubernetes-iteration-toolkit/pull/435