title: orientdb cluster names were ok in v2.0 but are now invalid?
body: <p>We recently upgraded from v2.0 to v2.1.9, and we're suddenly unable to query our clusters.  This query:</p>
  
  <pre><code> select * from cluster:tdv-st-2014-01-19
  </code></pre>
  
  <p>worked fine in 2.0 (and earlier), but now we get (in console and in Java API):</p>
  
  <pre><code>Error: com.orientechnologies.orient.core.sql.OCommandSQLParsingException: Error on parsing command at position #0: Error parsing query: 
  select * from cluster:tdv-st-2014-01-19
  Encountered " "-" "- "" at line 1, column 26.
  Was expecting one of:
      &lt;EOF&gt; 
      &lt;WHERE&gt; ...
      &lt;ORDER&gt; ...
      &lt;GROUP&gt; ...
      &lt;LIMIT&gt; ...
      &lt;SKIP2&gt; ...
      &lt;OFFSET&gt; ...
      &lt;TIMEOUT&gt; ...
      &lt;FETCHPLAN&gt; ...
      &lt;LOCK&gt; ...
      &lt;LET&gt; ...
      &lt;NOCACHE&gt; ...
      &lt;PARALLEL&gt; ...
      &lt;UNWIND&gt; ...
      ";" ...
      &lt;LET&gt; ...
      &lt;WHERE&gt; ...
      &lt;GROUP&gt; ...
      &lt;ORDER&gt; ...
      &lt;UNWIND&gt; ...
      &lt;SKIP2&gt; ...
      &lt;OFFSET&gt; ...
      &lt;LIMIT&gt; ...
      &lt;FETCHPLAN&gt; ...
      &lt;TIMEOUT&gt; ...
      &lt;LOCK&gt; ...
      &lt;PARALLEL&gt; ...
      &lt;NOCACHE&gt; ...
  </code></pre>
  
  <p>Looks like it doesn't like "-" characters in the cluster name any more?  We've tried quoting the cluster name, etc. but haven't found a way to get this query to work. Anybody have an idea?</p>