It's not possible to run Happy Path tests for che-theia PRs

[RomanNikitenko]

Describe the bug

Happy Path tests are not started for che-theia PRs.

Please see:

• Test upstream che-theia#1049 (comment)
• build: Adapt Build System to upstream changes che-theia#1238 (comment)

Che version

next (development version)

Steps to reproduce

I tried 2 ways:

• push a new commit to my PR
• add comment [crw-ci-test --rebuild] to my PR

Expected behavior

The tests are started successfully.

[dmytro-ndp]

@RomanNikitenko: thanks for reporting about an issue!

There was an outage on CRW Jenkins side, which had broken Happy path test triggering.

It works correctly now.