CodeStyle formatting to conform to basic Checkstyle rules.

The code-style rules follow google style with some changes:

1. Increase line length from 100 to 120
2. Disable JavaDoc related checkstyles as this needs more manual work.

Both source and test code are checked for code-style

hoodie-spark/src/main/scala/com/uber/hoodie/AvroConversionUtils.scala

@@ -47,10 +47,11 @@ object AvroConversionUtils {
                             structName: String,
                             recordNamespace: String): (Any) => Any = {
     dataType match {
-      case BinaryType => (item: Any) => item match {
-        case null => null
-        case bytes: Array[Byte] => ByteBuffer.wrap(bytes)
-      }
+      case BinaryType => (item: Any) =>
+        item match {
+          case null => null
+          case bytes: Array[Byte] => ByteBuffer.wrap(bytes)
+        }
       case ByteType | ShortType | IntegerType | LongType |
            FloatType | DoubleType | StringType | BooleanType => identity
       case _: DecimalType => (item: Any) => if (item == null) null else item.toString