Fixed BQSR IntegrationTests

* BinaryTag covariate is Experimental, not Standard (this was breaking integration tests)
   * New parameter in the Recalibration report requires new MD5 for one of the integration tests.

public/java/src/org/broadinstitute/sting/gatk/walkers/bqsr/BinaryTagCovariate.java

@@ -9,7 +9,7 @@ import org.broadinstitute.sting.utils.sam.GATKSAMRecord;
  * @author Mauricio Carneiro
  * @since 7/6/12
  */
-public class BinaryTagCovariate implements StandardCovariate {
+public class BinaryTagCovariate implements ExperimentalCovariate {
 
     private String tag;