Exclude CAF test

Author: GiacomoXT

calibration/tests/test_caf.py

@@ -13,6 +13,9 @@
 import validation_gt as vgt
 
 
+if b2test_utils.is_ci():
+    b2test_utils.skip_test("Will not run the test because $BELLE2_IS_CI is not set.")
+
 calibration_path = b2test_utils.require_file('calibration', 'validation')
 
 with b2test_utils.clean_working_directory():