Change serializer for DiskBasedMap to handle non serializable java objects

[ovj]

Current "com.uber.hoodie.common.util.SerializationUtils" requires us to have all objects to be java serializable.
Details of the discussion are here -> #495. We need to switch that to Kryo serializer so that we can handle non java serializable objects.

In this case "org.apache.avro.util.Utf8" is not java serializable but it can be present in GenericRecord (Hoodie Payload) we receive from input stream. Like this there can be other objects. We need something generic which can handle all such objects.

`Caused by: com.uber.hoodie.exception.HoodieSerializationException: unable to serialize object
at com.uber.hoodie.common.util.SerializationUtils.serialize(SerializationUtils.java:63)
at com.uber.hoodie.common.util.SerializationUtils.serialize(SerializationUtils.java:85)
at com.uber.hoodie.common.util.collection.DiskBasedMap.put(DiskBasedMap.java:169)
at com.uber.hoodie.common.util.collection.ExternalSpillableMap.put(ExternalSpillableMap.java:169)
at com.uber.hoodie.common.util.collection.ExternalSpillableMap.put(ExternalSpillableMap.java:42)
at com.uber.hoodie.io.HoodieMergeHandle.init(HoodieMergeHandle.java:154)
at com.uber.hoodie.io.HoodieMergeHandle.(HoodieMergeHandle.java:72)
at com.uber.hoodie.table.HoodieCopyOnWriteTable.getUpdateHandle(HoodieCopyOnWriteTable.java:231)
at com.uber.hoodie.table.HoodieCopyOnWriteTable.handleUpdate(HoodieCopyOnWriteTable.java:185)
at com.uber.hoodie.table.HoodieCopyOnWriteTable.handleUpsertPartition(HoodieCopyOnWriteTable.java:268)
... 31 more
Caused by: java.io.NotSerializableException: org.apache.avro.util.Utf8
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at java.util.HashMap.internalWriteEntries(HashMap.java:1790)
at java.util.HashMap.writeObject(HashMap.java:1363)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1128)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at com.uber.hoodie.common.util.SerializationUtils.serialize(SerializationUtils.java:60)
... 40 more

`