Our current polarion uploader creates test cases and adds them to a test run one-by one, requiring in 1-3 wsdl requests per test case. This was ok for MTT, since the total number of test cases in each run was fairly low, but is problematic for istio upstream suite, since there are now thousands of test cases and the upload can take several hours.

The polarion instance has a custom batch import endpoint, we should investigate whether using it would be faster and rewrite the uploader to use it.

ref https://github.com/stolostron/acmqe-mcn-test/blob/main/lib/reporting/polarion_report.py