TPC-H 1000 iterations 3->2 (#11477)

Author: iddqdex

ydb/tests/olap/load/test_tpch.py

@@ -81,5 +81,6 @@ class TestTpch1000(TpchSuiteBase):
 
 class TestTpch10000(TpchSuiteBase):
     scale: int = 10000
+    iterations: int = 2
     check_canonical: bool = False
     timeout = max(TpchSuiteBase.timeout, 3600.)