Changed CNR test class name to abbreviation

Author: dmitrii-zagornyi

tests/test_mkl_service.py

@@ -191,7 +191,7 @@ def test_set_memory_limit(self):
         mkl.set_memory_limit(128)
 
 
-class test_conditional_numerical_reproducibility_control():
+class test_cnr_control():
     # https://software.intel.com/en-us/mkl-developer-reference-c-conditional-numerical-reproducibility-control
     def test_cbwr(self):
         branches = [