…loudera#334)

* Code changes in RPCserver for user provided port

* Indentation Changes

* Indentation Changes

* Indentation Changes

* Indentation Changes

* Configuring Port Range

* Documentation Changed

* launcher.port.range will take care of launching RPC

* Checkstyle changes

* Checkstyle changes

* Dummy push

* Code changes

* Changed BindException Handling to SocketException Handling

* Changed Import Order

* Code changes to increase port range

* Set Port isConntect to true

* Indentation Changes & port range in livy-client.conf.template

* Indentation changes

* Changed visibilty of method private

* Indentation Changes

* Indenetation Changes

* Unit test case to test port range

* Checkstyle changes

* Unit test case for port range

* Added comment for Port Range Configuration and increase port range for unit test case