Description
Change tests to use Ubuntu20.04 as a host machine for WebAssembly testing.
Add new label linux-g++-Ubuntu20.04-x64_WebAssembly-x64 to jobs in
tqtc-qtsdk\jenkins-templates\jenkins\qt-jenkins-rta.ini
Add new label to TestRail plan, and update the ENT online plan to use that. Leave the old label to the ENT src tests.