[Backport] fixed - can't import external http to https redirecting images by default csv import

[ghost]

Description (*)

I think we should handle 302 redirection. We should check the next header if there is 302 redirection with url.

Fixed Issues (if relevant)

1. can't import external http to https redirecting images by default csv import #18839: can't import external http to https redirecting images by default csv import

Manual testing scenarios (*)

1. Use any image url with redirection like http://midwest-wholesale-staging.cloud.akeneo.com/bundles/pimui/images/info-user.png
2. It will redirect to https://midwest-wholesale-staging.cloud.akeneo.com/bundles/pimui/images/info-user.png and it is valid image.

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

Backport for: #18900

[magento-engcom-team]

Hi @rahulwebkul. Thank you for your contribution
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Add the comment under your pull request to deploy test or vanilla Magento instance:

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[magento-engcom-team]

Hi @sivaschenko, thank you for the review.
ENGCOM-3528 has been created to process this Pull Request

[magento-engcom-team]

Hi @rahulwebkul. Thank you for your contribution.
We will aim to release these changes as part of 2.2.8.
Please check the release notes for final confirmation.

Please, consider to port this solution to 2.3 release line.
You may use Porting tool to port commits automatically.