[Backport] Applied PHP-CS-Fixer: concat_space, no_multiline_whitespace_around_double_arrow, ordered_imports

[priti2jcommerce]

Original Pull Request

#21121

Description (*)

Applied following fixer rules:

• PHP CS Fixer: concat_space
• PHP CS Fixer: no_multiline_whitespace_around_double_arrow
• PHP CS Fixer: ordered_imports

Fixed Issues (if relevant)

1. N/A

Manual testing scenarios (*)

1. N/A

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)

[magento-engcom-team]

Hi @priti2jcommerce. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me 2.2-develop instance - deploy vanilla Magento instance

For more details, please, review the Magento Contributor Assistant documentation

[dmytro-ch]

Unfortunately, we can't accept this Pull Request to 2.2 release line, all code cleanup should be delivered to 2.3 release line. For more information, please, refer to Magento Code Contributions Guide.
Thank you!

[ghost]

Hi @priti2jcommerce, thank you for your contribution!
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