Disable pylint error for non-uppercase names

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/tests/scripts/test_psa_compliance.py b/tests/scripts/test_psa_compliance.py
index 53349b3..47caa05 100755
--- a/tests/scripts/test_psa_compliance.py
+++ b/tests/scripts/test_psa_compliance.py
@@ -175,6 +175,7 @@
 if __name__ == '__main__':
     BUILD_DIR = 'out_of_source_build'
 
+    # pylint: disable=invalid-name
     parser = argparse.ArgumentParser()
     parser.add_argument('--build-dir', nargs=1,
                         help='path to Mbed TLS / PSA Crypto build directory')