Disable unit tests that give inconsistent results.
These tests fail frequently in GitHub's CI workflow, while running fine locally. Disabling them to prevent build failures until we can find the cause. See OF-3269
Merge pull request #3308 from guusdk/OF-3266_ConnectionListener-setAcceptSelfSignedCertificates OF-3266: Fix wrong getter used in setAcceptSelfSignedCertificates