Added .gitlab-ci.yml

-Added comment blocks. -Added trigger to OPC UA test based on changed SOF/RBF (.tar.gz) file.

Closes L2SDP-534

applications/lofar2/images/lofar2_unb2b_sdp_station_full.tar.gz

+lofar2_unb2b_sdp_station_bf-r087d98be6.tar.gz
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