Corrections to extraction and installation paths for pentaho

This corrects the following error after a puppet agent run:

Error: /Stage[main]/Pentaho::Install/Puppi::Netinstall[netinstall_pentaho]/Exec[PostExtract pdi-ce-5.1.0.0-752.zip in /data02/pentaho/pdi-ce-5.1.0.0-752]: Failed to call refresh: Working directory '/data02/pentaho/pdi-ce-5.1.0.0-752/databases' does not exist
Error: /Stage[main]/Pentaho::Install/Puppi::Netinstall[netinstall_pentaho]/Exec[PostExtract pdi-ce-5.1.0.0-752.zip in /data02/pentaho/pdi-ce-5.1.0.0-752]: Working directory '/data02/pentaho/pdi-ce-5.1.0.0-752/databases' does not exist