Move shared code to testlib

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/analytics/test_exporter.py

@@ -66,7 +66,7 @@ class TestExporter(ABC):
             test_case_in_tms = self.search_test_case_id(test_case.id)
             steps = [{"content": value, "expected": " "} for key, value in test_case.steps.items()]
 
-            if test_case:
+            if test_case_in_tms:
                 self.update_test_case(test_case, test_case_in_tms)
             else:
                 self.create_test_case(test_case)