title: SaltStack gitfs issue
body: <p>I'm learning saltstack using docker containers (bbinet/salt-master and bbinet/salt-minion), but can't get gitfs running. I'll need to run some containers later in production, so i'm trying to simply spin up a rabbitmq installation, but, however, Salt doesn't seem to see git remotes in my master config:</p>
  
  <pre><code># /etc/salt/master (full, there's nothing more)
  auto_accept: True
  gitfs_provider: gitpython
  fileserver_backend:
    - git
    - roots
  gitfs_remotes:
    - git://github.com/saltstack-formulas/docker-formula.git
  
  # state being applied (full, the AMQP container is written in pillar)
  include:
    - docker.containers
  
  # result of state.apply call:
  amqp-minion-1:
      - Specified SLS docker.containers in saltenv base is not available on the salt master or through a configured fileserver
  </code></pre>
  
  <p>Output of <code>salt-run fileserver.file_list backend=git</code> is totally empty, so, as far as i can think, i'm doing something wrong specifying gitfs remotes. What could i do wrong and what  utilities should i use to debug this case?</p>
  
  <p>update: the same behavior is observed using freshly-installed pygit2, i think there's just something i miss</p>
  
  <p>update #2: it seems that config is completely ignored, salt-call --local config.get gitfs_remotes returns nothing, other options like auto_accept are not changing whatever is specified in config. Log tells me that config is read, however, that doesn't change a thing(even if consists only of <code>auto_accept: False</code> line).<br>
  salt-master version 2015.5.3</p>