HOTFIX: Fix build issue with Akka 2.3.4 upgrade.

We had to upgrade our Hive 0.12 version as well to deal with a protobuf
conflict (both hive and akka have been using a shaded protobuf version).
This is testing a correctly patched version of Hive 0.12.

Author: Patrick Wendell <pwendell@gmail.com>

Closes #2756 from pwendell/hotfix and squashes the following commits:

cc979d0 [Patrick Wendell] HOTFIX: Fix build issue with Akka 2.3.4 upgrade.
[SPARK-2924] Required by scala 2.11, only one fun/ctor amongst overriden alternatives, can have default argument(s).

...riden alternatives, can have default argument.

Author: Prashant Sharma <prashant.s@imaginea.com>

Closes #2750 from ScrapCodes/SPARK-2924/default-args-removed and squashes the following commits:

d9785c3 [Prashant Sharma] [SPARK-2924] Required by scala 2.11, only one function/ctor amongst overriden alternatives, can have default argument.