Problems with venv being created for functional tests

[sabudilovskiy]

The scenario of reproducing the problem:

1. clone: https://github.com/sabudilovskiy/service_template_test
2. cmake and start ctest I got this: https://pastebin.com/T9yX5cj0
3. clear cmake, rename folder 'testsuite' to 'tests'
4. cmake and start ctest
5. venv is working(log has some troubles with config which doesnt matter any important): https://pastebin.com/QaduLwmZ