PDI-10643 - changing the condition for determining there is no mapping information in the repository.  Was using "key" which is always present.  "key_type" is only present when the mapping information is available.
PDI-10643 - changing the condition for determining there is no mapping information in the repository.  Was using "key" which is always present.  "key_type" is only present when the mapping information is available.

brosander/pentaho-hadoop-shims,pentaho/pentaho-hadoop-shims,dkincade/pentaho-hadoop-shims,andrei-viaryshka/pentaho-hadoop-shims,mtseu/pentaho-hadoop-shims,mkambol/pentaho-hadoop-shims,SergeyTravin/pentaho-hadoop-shims,smaring/pentaho-hadoop-shims,bmorrise/pentaho-hadoop-shims,TatsianaKasiankova/pentaho-hadoop-shims,stepanovdg/pentaho-hadoop-shims