rework if and result reporting in regression branch

    - python3 scripts/basop_check_for_changes_in_testcases.py --xml_report $XML_REPORT_BRANCH $CSV_MAIN $CSV_BRANCH || regressions_found=$?

    - exit_code=0

    - if [ $exit_code -eq 1 ]; then echo "Differences encountered"; exit_code=$EXIT_CODE_NON_BE; fi

    - if [ $zero_errors_branch != 1 ]; then echo "Run errors encountered!"; exit_code=$EXIT_CODE_NON_BE; fi

    - if [ $regressions_found != 0 ] && [ "$SKIP_REGRESSION_CHECK" != "true" ]; then

    - *print-results-banner

    - if [ $zero_errors_branch != 1 ]; then

    -   echo "Run errors encountered!"

    -   exit_code=$EXIT_CODE_FAIL

    - elif [ $regressions_found != 0 ] && [ "$SKIP_REGRESSION_CHECK" != "true" ]; then

    -    if [ $allow_regressions_flag == 0 ]; then

    -        echo "Detected regression wrt to main, [allow regression] not set!"

    -        echo "Detected regression wrt to $CI_MERGE_REQUEST_TARGET_BRANCH_NAME, [allow regression] not set!"

    -        exit_code=$EXIT_CODE_FAIL;

    -    else

    -        echo "Detected regression wrt to main, [allow regression] set."

    -        echo "Detected regression wrt to $CI_MERGE_REQUEST_TARGET_BRANCH_NAME, [allow regression] set."

    -        exit_code=$EXIT_CODE_NON_BE;

    -    fi

    - fi