SPARK-1812: catalyst - move to scala-logging-slf4j 2.1.0

Signed-off-by: Anand Avati <avati@redhat.com>
SPARK-1812: update all artifactId to spark-${module}_2.11

Signed-off-by: Anand Avati <avati@redhat.com>
SPARK-1812: temporarily remove spark-repl from assembly dependency

Signed-off-by: Anand Avati <avati@redhat.com>
SPARK-1812: temporarily disable external/kafka module (dependency unavailable)

Signed-off-by: Anand Avati <avati@redhat.com>
SPARK-1812: move to akka-zeromq-2.11.0-M3 version 2.2.0

.. until akka-zeromq-2.11 gets published

Signed-off-by: Anand Avati <avati@redhat.com>
SPARK-1812: temporarily disable examples module

missing dependencies:

- kafka_2.11 (transitive)
- algebird_2.11 (com.twitter)

Signed-off-by: Anand Avati <avati@redhat.com>