Bug #3976 : merge stdout and stderr in execute output

import os

import re

import psutil

from subprocess import Popen, PIPE

from subprocess import Popen, PIPE, STDOUT

from multiprocessing import cpu_count

from platform import platform, machine

from socket import gethostbyaddr, gethostname

        output = None

        try:

            #FIXME: stop using shell=true and parse arguments with shlex.split()

            data = Popen(command, shell=True,

            data = Popen(command,

                         shell=True,

                         bufsize=-1,

                         stdin=PIPE,

                         stdout=PIPE,

                         stderr=PIPE).communicate()

                         stderr=STDOUT).communicate()[0]

            if data:

                output = data

        except: