Add namespace directory in manifest collection

[smoshiur1237]

There is a possibility to miss same kinds of manifest in different namespace. So this PR will add the namespace directory in manifest collection to gather all the manifests which will improve debugging capability.

[smoshiur1237]

/override metal3-centos-e2e-integration-test-release-1-7

[metal3-io-bot]

@smoshiur1237: Overrode contexts on behalf of smoshiur1237: metal3-centos-e2e-integration-test-release-1-7

In response to [this](https://github.com/metal3-io/metal3-dev-env/pull/1432#issuecomment-2178098459): >/override metal3-centos-e2e-integration-test-release-1-7 > Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[smoshiur1237]

/test metal3-dev-env-integration-test-ubuntu-main

[smoshiur1237]

/cc @tuminoid @mboukhalfa

[smoshiur1237]

Manifest can be checked here : https://jenkins.nordix.org/view/Metal3/job/metal3-dev-env-integration-test-ubuntu-main/37/

[metal3-io-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mboukhalfa

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/metal3-io/metal3-dev-env/blob/main/OWNERS)~~ [mboukhalfa] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment