Re-do argument passing to match zbehan's change

bin/cros_run_wifi_tests.sh

 #!/bin/bash
 
 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Wrapper script around run_remote_tests.sh that knows how to find
 # device test cells.
 
 
@@ skipping 45 matching lines @@
 run_remote_args=${FLAGS_args}
 
 append_flag () {
     local delim=''
     [ -n "${run_remote_flags}" ] && delim=' '
     run_remote_flags="${run_remote_flags}${delim}$*"
 }
 
 append_arg () {
     local delim=''
-    [ -n "${run_remote_args}" ] && delim=','
+    [ -n "${run_remote_args}" ] && delim=' '
     run_remote_args="${run_remote_args}${delim}$*"
 }
 
 if [ -n "${FLAGS_board}" ]; then
   append_flag --board "'${FLAGS_board}'"
 fi
 
 if [ -n "${FLAGS_chroot}" ]; then
   append_flag --chroot "'${FLAGS_chroot}'"
 fi
@@ skipping 61 matching lines @@
   exit 1
 fi
 
 set $ret
 remote=$1
 shift
 for arg in $*; do
     append_arg $arg
 done
 
-eval "exec "${script_root}/run_remote_tests.sh" \
-    -a "${run_remote_args}" --remote=${remote} $run_remote_flags $FLAGS_ARGV"
+eval "exec ${script_root}/run_remote_tests.sh \
+      --args=\"${run_remote_args}\" --remote=${remote} $run_remote_flags \
+      $FLAGS_ARGV"