NXCALS-6679 Use nxcals-ci labeled nodes to run gitlab_CI
It change execution of CI from nxcals-jenkins-slave-1 and nxcals-jenkins-slave2 to nxcals-jenkins-slave-test, which is faster.
@acc-logging-team - please have a look for approval.
Please describe the merge request here.
Closes NXCALS-6679
Edited by Rafal Mucha