telnet: allocate as many telnet contexts as we have cli contexts

modules/Telnet_Server/telnet_server.h

@@ -9,12 +9,13 @@
 #define TELNET_SERVER_H_
 
 #include "settings_api.h"
+#include "cli.h"
 
 /* Dimensions the buffer into which input characters are placed. */
 #define cmdMAX_INPUT_SIZE			144
 
 /*Number of connection*/
-#define NUMBER_TELNET_CONNECT		5
+#define NUMBER_TELNET_CONNECT	MAX_SESSIONS
 
 void telnet_server_init(void);
 void telnet_server_close(void);