Add support for container-overrides attribute

[valaparthvi]

What does this PR do?:

Adds support for container-overrides attribute, as described in devfile/api#920 (comment).

The logic for this PR is motivated by devfile/devworkspace-operator#967.

Which issue(s) this PR fixes:

Fixes part of devfile/api#936

PR acceptance criteria:

Testing and documentation do not need to be complete in order for this PR to be approved. We just need to ensure tracking issues are opened.

• Open new test/doc issues under the devfile/api repo
• Check each criteria if:
• There is a separate tracking issue. Add the issue link under the criteria
  or
• test/doc updates are made as part of this PR
• If unchecked, explain why it's not needed

• Unit/Functional tests

• QE Integration test

• Documentation

  Will work on docs once the PR is approved.

• Client Impact

• Gosec scans

How to test changes / Special notes to the reviewer:

Override fields such as securityContext or resources of container by using components[*].container.attributes field.
Use the examples in devfile/api#920 (comment).

[codecov]

Codecov Report

Base: 58.68% // Head: 59.04% // Increases project coverage by +0.35% 🎉

Coverage data is based on head (947b122) compared to base (8e009f5).
Patch coverage: 82.08% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #157      +/-   ##
==========================================
+ Coverage   58.68%   59.04%   +0.35%     
==========================================
  Files          36       36              
  Lines        4066     4131      +65     
==========================================
+ Hits         2386     2439      +53     
- Misses       1541     1549       +8     
- Partials      139      143       +4     

Impacted Files	Coverage Δ
pkg/devfile/generator/utils.go	90.89% <82.08%> (-1.32%)	⬇️

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[maysunfaisal]

small nit

[valaparthvi]

@maysunfaisal What do I do about coverage? Would you suggest I add unit tests covering them?
Thank you for the review though 🙌

[maysunfaisal]

@valaparthvi yes that would be ideal and nice

[maysunfaisal]

can we add a test case with attributes to cover this? I think we can add one to TestGetContainers

[valaparthvi]

947b122

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: maysunfaisal, valaparthvi

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