error out if import devfile version is greater than child

[yangcao77]

Signed-off-by: Stephanie yangcao@redhat.com

What does this PR do?:

This PR compares the version of parent/plugin devfile with it's child devfile, and error out if greater than child devfile version.

Which issue(s) this PR fixes:

Fixes devfile/api#686

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

• Client Impact

How to test changes / Special notes to the reviewer:

[kim-tsao]

This is outside the PR, but should we open up a doc issue to explain this behaviour?

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kim-tsao, yangcao77

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 [kim-tsao,yangcao77]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[yangcao77]

This is outside the PR, but should we open up a doc issue to explain this behaviour?

I understand the concern, but we currently do not have any doc for the errors. I'm not sure if we want to doc all error behaviors.

[kim-tsao]

This is outside the PR, but should we open up a doc issue to explain this behaviour?

I understand the concern, but we currently do not have any doc for the errors. I'm not sure if we want to doc all error behaviors.

I was thinking about having a section for version compatibility wrt to parent/plugin overriding or maybe documenting this as a limitation. Users may assume full interoperability otherwise.

[yangcao77]

I was thinking about having a section for version compatibility wrt to parent/plugin overriding or maybe documenting this as a limitation. Users may assume full interoperability otherwise.

I will merge this PR, and issue created to track the doc change required: devfile/api#694