Do not run oneTBB tests in parallel

[phprus]

Description

Do not run oneTBB tests in parallel with any other tests if we add oneTBB as a cmake subproject by add_subdirectory.

• https://cmake.org/cmake/help/v3.5/prop_test/RUN_SERIAL.html

Fixes # - issue number(s) if exists

Type of change

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• bug fix - change that fixes an issue
• new feature - change that adds functionality
• tests - change in tests
• infrastructure - change in infrastructure and CI
• documentation - documentation update

Tests

• added - required for new features and some bug fixes
• not needed

Documentation

• updated in # - add PR number
• needs to be updated
• not needed

Breaks backward compatibility

• Yes
• No
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Other information

[isaevil]

Do I understand it correctly that this is done to serialize oneTBB's CTest while running the project's tests (which adds oneTBB using add_subdirectory) using ctest -j <parallel_level> command?

[phprus]

@isaevil
Yes.