Register more header line classes

Author: tomwhite

src/main/java/org/disq_bio/disq/serializer/DisqKryoRegistrator.java

@@ -136,6 +136,9 @@ public void registerClasses(final Kryo kryo) {
     kryo.register(htsjdk.variant.vcf.VCFHeaderLineType.class);
     kryo.register(htsjdk.variant.vcf.VCFHeaderVersion.class);
     kryo.register(htsjdk.variant.vcf.VCFInfoHeaderLine.class);
+    kryo.register(htsjdk.variant.vcf.VCFMetaHeaderLine.class);
+    kryo.register(htsjdk.variant.vcf.VCFPedigreeHeaderLine.class);
+    kryo.register(htsjdk.variant.vcf.VCFSampleHeaderLine.class);
     kryo.register(htsjdk.variant.vcf.VCFSimpleHeaderLine.class);
 
     // java.io