title: RestrictionManager getRestrictions() is always empty
body: <p>I'm trying to set-up the remote configuration for my app with MobileIron EMM. I've done everything as described in developer  guide:
  1. I've set-up the manifest:</p>
  
  <pre><code>...
          &lt;meta-data
              android:name="android.content.APP_RESTRICTIONS"
              android:resource="@xml/app_restrictions"/&gt;
      &lt;/application&gt;
  </code></pre>
  
  <p>2. I've described the restriction:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;restrictions xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;restriction
          android:title="@string/some_title"
          android:key="SOME_KEY"
          android:restrictionType="string"
          android:defaultValue="123"/&gt;
  &lt;/restrictions&gt;
  </code></pre>
  
  <p>3. I'm trying to receive it as following:</p>
  
  <pre><code>RestrictionsManager manager = (RestrictionsManager) context.getSystemService(Context.RESTRICTIONS_SERVICE);
          Bundle b = manager.getApplicationRestrictions();
          if(b!=null){
              if(b.containsKey("SOME_KEY")) {
                  return b.getString("SOME_KEY");
              }else{
                  System.out.println("bundle is not null");
                  for (String s: b.keySet()){
                      System.out.println("key in b is : " + s);
                  }
                  System.out.println(b.isEmpty() + " bundle is empty");
              }
          }else{
              System.out.println("Bundle is null");
          }
          return "";
      }
  </code></pre>
  
  <p>I've always got the output: </p>
  
  <pre><code>bundle is not null
  true bundle is empty
  </code></pre>
  
  <p>although I've set the default value for the restriction. Why am I not getting at least default value for the restriction? Why am I never get an actual values (at the server side I've set the values with MobileIron Cloud and its AppConnect configuration)? Tried with several devices. What am I missing? Please help. My goal is to remotely set-up some key-value to the app.</p>