Round the sum of percentages before validating to account for floating point errors (#1824)

* Round the sum of percentages before validating to account for floating point errors
---------

Co-authored-by: Kian Cossettini <Kian.Cossettini@amd.com>

projects/rocprofiler-systems/tests/rocpd-validation-rules/python/python-source-rules.json

@@ -50,7 +50,7 @@
                     "description": "Verify that percentages sum to 100.",
                     "error_message": "Percentages do not sum to 100.",
                     "expected_result": 100,
-                    "query": "SELECT SUM(percentage) FROM top;"
+                    "query": "SELECT ROUND(SUM(percentage), 1) FROM top;"
                 }
             ]
         },