Fix problems with non-ascii values passed as part of the command to connection plugins

@drybjed discovered this with non-ascii environment variables and
command line arguments to script and raw module.

lib/ansible/plugins/connection/local.py

@@ -25,10 +25,13 @@ import select
 import fcntl
 import getpass
 
+from ansible.compat.six import text_type, binary_type
+
 import ansible.constants as C
 
 from ansible.errors import AnsibleError, AnsibleFileNotFound
 from ansible.plugins.connection import ConnectionBase
+from ansible.utils.unicode import to_bytes
 
 try:
     from __main__ import display
@@ -69,9 +72,15 @@ class Connection(ConnectionBase):
             raise AnsibleError("Internal Error: this module does not support optimized module pipelining")
         executable = C.DEFAULT_EXECUTABLE.split()[0] if C.DEFAULT_EXECUTABLE else None
 
-        display.vvv("{0} EXEC {1}".format(self._play_context.remote_addr, cmd))
+        display.vvv(u"{0} EXEC {1}".format(self._play_context.remote_addr, cmd))
         # FIXME: cwd= needs to be set to the basedir of the playbook
         display.debug("opening command with Popen()")
+
+        if isinstance(cmd, (text_type, binary_type)):
+            cmd = to_bytes(cmd)
+        else:
+            cmd = map(to_bytes, cmd)
+
         p = subprocess.Popen(
             cmd,
             shell=isinstance(cmd, basestring),