Fix deletion of the pod created by blueprint without namespace

[AKhoria]

Change Overview

This PR fixes pod which aren't deleted if create by blueprints without namespace

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test

Issues

Test Plan

run blueprint without namespace:

actions:
  post-export:
    name: ""
    kind: Namespace
    phases:
      - func: KubeTask
        name: hookPhase
        args:
          command:
            - /bin/sh
            - -c
            - |
              sleep 50
          image: bitnami/kubectl

ensure that kanister-job was deleted

• 💪 Manual
• ⚡ Unit test
• 💚 E2E

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[e-sumin]

LGTM but I think it would be good to have unit test coverage for both cases (with and without namespace).

[AKhoria]

LGTM but I think it would be good to have unit test coverage for both cases (with and without namespace).
Do you mean StartPod function?
But this logic (choosing namespace) is performed not in pod_controller but inside pod.go which is mocked.