dist: remove abrt from AMI, since it's not able to work with Scylla
dist: remove abrt from AMI, since it's not able to work with Scylla

New CentOS Base Image contains abrt by default, so remove it.

Signed-off-by: Takuya ASADA <4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>
Message-Id: <1453416479-28553-2-git-send-email-4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>

avikivity/scylla,raphaelsc/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,duarten/scylla,kjniemi/scylla,avikivity/scylla,duarten/scylla,scylladb/scylla,raphaelsc/scylla,kjniemi/scylla,raphaelsc/scylla,kjniemi/scylla