Fix typo

Change-Id: I6bc605fc5b84603098d0b5bfa3eb750167c3cd65
Reviewed-on: https://review.gerrithub.io/378276
Reviewed-by: Tatyanka Leontovich <tleontovich@mirantis.com>
Tested-by: Tatyanka Leontovich <tleontovich@mirantis.com>
diff --git a/tcp_tests/managers/sl_manager.py b/tcp_tests/managers/sl_manager.py
index 705816d..af75ff4 100644
--- a/tcp_tests/managers/sl_manager.py
+++ b/tcp_tests/managers/sl_manager.py
@@ -84,7 +84,7 @@
                             in self.__underlay.node_names()
                             if node_to_run in node_name]
         with self.__underlay.remote(node_name=target_node_name[0]) as node_remote:
-            cmd = "python -k {}".format(path_tests_to_run)
+            cmd = "pytest -k {}".format(path_tests_to_run)
             result = node_remote.execute(cmd)
             LOG.debug("Test execution result is {}".format(result))
         return result