title: Ansible error when using copy module for copying files
body: <p>i keep getting this when trying out Ansible 2.1.0.0</p>
  
  <pre><code>- name: Copy Middleware Installer
     copy: src={{ mw_installer }}
          dest={{ installables_home }}
          owner={{ oracle_user }}
          group={{ oracle_group }}
  </code></pre>
  
  <p>I am trying to copy the mw installer that is 1 GB. the target system has 16 GB memory and has lot of space left..the master from where i run ansible has 1 GB of RAM.</p>
  
  <pre><code>An exception occurred during task execution. The full traceback is:
  Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/ansible/executor/task_executor.py",line 124, in run
  res = self._execute()
  File "/usr/lib/python2.7/site-packages/ansible/executor/task_executor.py", line 446, in _execute
  result = self._handler.run(task_vars=variables)
  File "/usr/lib/python2.7/site-packages/ansible/plugins/action/copy.py", line 156, in run source_full = self._loader.get_real_file(source_full)
  File "/usr/lib/python2.7/site-packages/ansible/parsing/dataloader.py", line 334, in get_real_file
  data = f.read()
  MemoryError
  
  fatal: [10.135.239.23]: FAILED! =&gt; {"failed": true, "msg": "Unexpected failure during module execution.", "stdout": ""}
  </code></pre>
  
  <p>If i use synchronize module </p>
  
  <pre><code>- name: Copy Middleware Installer
    synchronize: src={{ mw_installer }}
      dest={{ installables_home }}
      set_remote_user=no
  </code></pre>
  
  <p>it is asking for password</p>