Include jobs with performance testing by default to a regular CI pipeline

[ligurio]

By default we don't include jobs with performance testing to a regular CI pipeline
because are not required for each commit and performance tests cannot me simultaneously run with other jobs on workers.
So performance jobs were not included by default to avoid unneeded overhead fro our resource pool.

I suggest to enable performance jobs by default in our regular CI pipeline (that triggered per commit in a feature branch) but disable automatically start. One can start required jobs in manual mode using web interface.

GitLab CI documentation: https://docs.gitlab.com/ee/ci/yaml/#when

// CC: @tsafin