Fix glibc compatibility

[alexey-milovidov]

Changelog category (leave one):

• Build/Testing/Packaging Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Removed dependency on clock_getres.

[alexey-milovidov]

Compatibility check — Compatibility check passed

[alexey-milovidov]

unit tests: cannot reproduce:

./unit_tests_dbms --gtest_filter=*ExceptionFromSchedule*
Running main() from ../contrib/googletest/googletest/src/gtest_main.cc
Note: Google Test filter = *ExceptionFromSchedule*
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from ThreadPool
[ RUN      ] ThreadPool.ExceptionFromSchedule
[       OK ] ThreadPool.ExceptionFromSchedule (832 ms)
[----------] 1 test from ThreadPool (832 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (832 ms total)
[  PASSED  ] 1 test.