Fix file.managed for windows

[twangboy]

Description of Issue/Question

PR: #31815 broke file.managed for windows. It created a new function called apply_template_on_contents. file.managed was modified to depend on the function. The function was created in file.py but not namespaced in win_file.py.

Setup

Windows 2008R2
Salt 2015.8.8 tag
State File:

  1 my_file:
  2   file.managed:
  3    - name: C:\stuff1.txt
  4    - template: jinja
  5    - contents:
  6      - hello and a few other things world
  7      - level = warning
  8      - SpongeBob = Cool
  9      - Patrick = Cool Too
 10      - Squidward = Cranky
 11      - Plankton = Evil Genious

Steps to Reproduce Issue

Apply the state and you receive the following error:

slee_build_win64:
----------
          ID: my_file
    Function: file.managed
        Name: C:\stuff1.txt
      Result: False
     Comment: An exception occurred in this state: Traceback (most recent call last):
                File "C:\salt\bin\lib\site-packages\salt\state.py", line 1626, in call
                  **cdata['kwargs'])
                File "C:\salt\bin\lib\site-packages\salt\loader.py", line 1492, in wrapper
                  return f(*args, **kwargs)
                File "C:\salt\bin\lib\site-packages\salt\states\file.py", line 1481, in managed
                  contents = __salt__['file.apply_template_on_contents'](
                File "C:\salt\bin\lib\site-packages\salt\loader.py", line 900, in __getitem__
                  func = super(LazyLoader, self).__getitem__(item)
                File "C:\salt\bin\lib\site-packages\salt\utils\lazy.py", line 93, in __getitem__
                  raise KeyError(key)
              KeyError: 'file.apply_template_on_contents'
     Started: 22:31:15.576000
    Duration: 827.0 ms
     Changes:

Versions Report

slee_build_win64:
    Salt Version:
               Salt: 2015.8.8

    Dependency Versions:
             Jinja2: 2.7.3
           M2Crypto: Not Installed
               Mako: Not Installed
             PyYAML: 3.11
              PyZMQ: 14.7.0
             Python: 2.7.11 (v2.7.11:6d1b6a68f775, Dec  5 2015, 20:40:30) [MSC v.1500 64 bit (AMD64)]
               RAET: Not Installed
            Tornado: 4.2.1
                ZMQ: 4.1.2
               cffi: Not Installed
           cherrypy: Not Installed
           dateutil: 2.4.2
              gitdb: Not Installed
          gitpython: Not Installed
              ioflo: Not Installed
            libgit2: Not Installed
            libnacl: Not Installed
       msgpack-pure: Not Installed
     msgpack-python: 0.4.6
       mysql-python: 0.6.6.None
          pycparser: Not Installed
           pycrypto: 2.6.1
             pygit2: Not Installed
       python-gnupg: 0.3.7
              smmap: Not Installed
            timelib: Not Installed

    System Versions:
               dist:
            machine: AMD64
            release: 2008ServerR2
             system: 2008ServerR2 6.1.7601 SP1 Multiprocessor Free