[SPARK-4632] version update

Author: Prabeesh K <[email protected]>

Closes #3495 from prabeesh/master and squashes the following commits:

ab03d50 [Prabeesh K] Update pom.xml
8c6437e [Prabeesh K] Revert
e10b40a [Prabeesh K] version update
dbac9eb [Prabeesh K] Revert
ec0b1c3 [Prabeesh K] [SPARK-4632] version update
a835505 [Prabeesh K] [SPARK-4632] version update
831391b [Prabeesh K]  [SPARK-4632] version update

Author: prabeesh

external/mqtt/pom.xml

@@ -43,8 +43,8 @@
     </dependency>
     <dependency>
       <groupId>org.eclipse.paho</groupId>
-      <artifactId>mqtt-client</artifactId>
-       <version>0.4.0</version>
+      <artifactId>org.eclipse.paho.client.mqttv3</artifactId>
+      <version>1.0.1</version>
     </dependency>
     <dependency>
       <groupId>org.scalatest</groupId>