Unblock the gate for ceilometer-alarm failures

Removing the ceilometer-alarm container since the module
has been replaced with aodh

Change-Id: I1b9a5337e40bddaedd0e112bc9b94fba8a1ba3b4
Closes-Bug:#1520074

docker/ceilometer/ceilometer-alarm/Dockerfile.j2

@@ -1,15 +0,0 @@
-FROM {{ namespace }}/{{ image_prefix }}ceilometer-base:{{ tag }}
-MAINTAINER {{ maintainer }}
-
-{% if install_type == 'binary' %}
-    {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
-
-RUN yum install -y openstack-ceilometer-alarm \
-  && yum clean all
-
-    {% endif %}
-{% endif %}
-
-{{ include_footer }}
-
-USER ceilometer

docker/ceilometer/ceilometer-alarm/config-external.sh

@@ -1,10 +0,0 @@
-#!/bin/bash
-SOURCE="/var/lib/kolla/ceilometer/ceilometer.conf"
-TARGET="/etc/ceilometer/ceilometer.conf"
-OWNER="ceilometer"
-
-if [[ -f "$SOURCE" ]]; then
-    cp $SOURCE $TARGET
-    chown ${OWNER}: $TARGET
-    chmod 0644 $TARGET
-fi