Fix code-quality issue in RemoteCommandExecutor

The __del__ special method is designed to be called by
the Python virtual machine when an object is no longer
reachable, but before it is destroyed.
Calling a __del__ method explicitly may cause an object
to enter an unsafe state.

Signed-off-by: Nicola Sirena <[email protected]>

Author: NSsirena

tests/integration-tests/remote_command_executor.py

@@ -74,6 +74,10 @@ def __init__(
         self.__user_at_hostname = "{0}@{1}".format(username, node_ip)
 
     def __del__(self):
+        self.close_connection()
+
+    def close_connection(self):
+        """Close SSH connection."""
         try:
             self.__connection.close()
         except Exception as e:
@@ -82,7 +86,7 @@ def __del__(self):
 
     def reset_connection(self):
         """Reset SSH connection."""
-        self.__del__()
+        self.close_connection()
         if self.__connection_kwargs:
             self.__connection = Connection(**self.__connection_kwargs)