improve behavior about send messages through a socket

[thejbte]

Problem:

The send_active_response_message function is not needed, you can use send_request_socket. On the other hand, in the send_message_to_syslog_socket function use the SocketController class as done in send_request_socket so the import socket is not needed (delete it).

• The SocketController class only allows TCP connections and send_active_response_message receives UDP and also waits for a response
• Test if ManInTheMiddle does the SocketController thing in a better way and is already used in the framework
• Fix tests that use send_active_response_message and send_message_to_syslog_socket in test_remoted