enable autofilter on tp-link camera exploit

modules/exploits/linux/http/tp_link_sc2020n_authenticated_telnet_injection.rb

@@ -55,6 +55,11 @@ class MetasploitModule < Msf::Exploit::Remote
           ])
     end
 
+    # This module returns false positives for credentialed logins
+    def autofilter
+      true
+    end
+
     def telnet_timeout
       (datastore['TelnetTimeout'] || 10).to_i
     end