replace awaitTransformation with awaitTermination in scaladoc/javadoc

Author: Holden Karau <holden@pigscanfly.ca>

Closes #2861 from holdenk/SPARK-4015-Documentation-in-the-streaming-context-references-non-existent-function and squashes the following commits:

081db8a [Holden Karau] fix pyspark streaming doc too
0e03863 [Holden Karau] replace awaitTransformation with awaitTermination

python/pyspark/streaming/context.py

@@ -79,7 +79,7 @@ class StreamingContext(object):
     L{DStream} various input sources. It can be from an existing L{SparkContext}.
     After creating and transforming DStreams, the streaming computation can
     be started and stopped using `context.start()` and `context.stop()`,
-    respectively. `context.awaitTransformation()` allows the current thread
+    respectively. `context.awaitTermination()` allows the current thread
     to wait for the termination of the context by `stop()` or by an exception.
     """
     _transformerSerializer = None

streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala

@@ -47,7 +47,7 @@ import org.apache.spark.streaming.ui.{StreamingJobProgressListener, StreamingTab
  * The associated SparkContext can be accessed using `context.sparkContext`. After
  * creating and transforming DStreams, the streaming computation can be started and stopped
  * using `context.start()` and `context.stop()`, respectively.
- * `context.awaitTransformation()` allows the current thread to wait for the termination
+ * `context.awaitTermination()` allows the current thread to wait for the termination
  * of the context by `stop()` or by an exception.
  */
 class StreamingContext private[streaming] (

streaming/src/main/scala/org/apache/spark/streaming/api/java/JavaStreamingContext.scala

@@ -46,7 +46,7 @@ import org.apache.spark.streaming.receiver.Receiver
  * org.apache.spark.api.java.JavaSparkContext (see core Spark documentation) can be accessed
  * using `context.sparkContext`. After creating and transforming DStreams, the streaming
  * computation can be started and stopped using `context.start()` and `context.stop()`,
- * respectively. `context.awaitTransformation()` allows the current thread to wait for the
+ * respectively. `context.awaitTermination()` allows the current thread to wait for the
  * termination of a context by `stop()` or by an exception.
  */
 class JavaStreamingContext(val ssc: StreamingContext) extends Closeable {