Recognise javax.validation.constraints validation library

[IlyaMuravjov]

Description

Makes ValidEntityValueProvider recognize annotations from javax.validation.constraints.

How to test

Manual tests

• Open spring-boot-testing project

• Add spring-boot-starter-validation dependency

• Add @NotEmpty and @Email annotations to Order.buyer field

• Generate integration tests for OrderService.getOrderById()

• There should be test that saves valid Order to the database

Self-check list

• I've set the proper labels for my PR (at least, for category and component).
• PR title and description are clear and intelligible.
• I've added enough comments to my code, particularly in hard-to-understand areas.
• The functionality I've repaired, changed or added is covered with automated tests.
• Manual tests have been provided optionally.
• The documentation for the functionality I've been working on is up-to-date.