Move uses of to_bytes, to_text, to_native to use the module_utils version (#17423)

We couldn't copy to_unicode, to_bytes, to_str into module_utils because
of licensing.  So once created it we had two sets of functions that did
the same things but had different implementations.  To remedy that, this
change removes the ansible.utils.unicode versions of those functions.

lib/ansible/plugins/action/net_template.py

@@ -19,18 +19,18 @@
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
-import sys
 import os
 import time
 import glob
 import urlparse
 
+from ansible.module_utils._text import to_text
 from ansible.plugins.action import ActionBase
-from ansible.utils.boolean import boolean
-from ansible.utils.unicode import to_unicode
+
 
 BOOLEANS = ('true', 'false', 'yes', 'no')
 
+
 class ActionModule(ActionBase):
 
     TRANSFERS_FILES = False
@@ -92,7 +92,7 @@ class ActionModule(ActionBase):
 
         try:
             with open(source, 'r') as f:
-                template_data = to_unicode(f.read())
+                template_data = to_text(f.read())
         except IOError:
             return dict(failed=True, msg='unable to load src file')
 
@@ -108,5 +108,3 @@ class ActionModule(ActionBase):
         searchpath.append(os.path.dirname(source))
         self._templar.environment.loader.searchpath = searchpath
         self._task.args['src'] = self._templar.template(template_data)
-
-