[Integration] Refactoring some customer fixtures

[Usik2203]

Description (*)

This PR refactores some customer fixtures for Integration Tests

[m2-assistant]

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[Usik2203]

@magento run all tests

[Usik2203]

@magento run Static Tests

[Usik2203]

@magento run all tests

[ihor-sviziev]

✔ Approved.

Failing tests looks not related to changes form this PR.

[magento-engcom-team]

Hi @ihor-sviziev, thank you for the review.
ENGCOM-7617 has been created to process this Pull Request

[engcom-Alfa]

QA not applicable

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