LAM-33 Removed common.yml task in Apache Kafka role.

ansible/roles/apache-kafka/tasks/common.yml

----
-  - name: Download Apache Kafka.
-    get_url: url=http://mirrors.myaegean.gr/apache/kafka/0.8.2.1/kafka_2.10-0.8.2.1.tgz dest=/root/kafka_2.10-0.8.2.1.tgz
-    tags:
-      - download
-
-  - name: Uncompress Apache Kafka.
-    unarchive: src=/root/kafka_2.10-0.8.2.1.tgz dest=/usr/local copy=no
-    tags:
-      - uncompress
-
-  - name: Create softlink for Apache Kafka.
-    file: src=/usr/local/kafka_2.10-0.8.2.1 dest=/usr/local/kafka state=link
-    tags:
-      - uncompress
-