Rename Galera to MariaDB

Change-Id: I3134ba72e2ce4e85a17facbc3b5af4c1c3438d33
Closes-Bug: #1491740

ansible/roles/mariadb/defaults/main.yml

@@ -10,7 +10,7 @@ database_cluster_name: "openstack"
 ####################
 # Docker
 ####################
-mariadb_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ kolla_install_type }}-galera"
+mariadb_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ kolla_install_type }}-mariadb"
 mariadb_tag: "{{ openstack_release }}"
 mariadb_image_full: "{{ mariadb_image }}:{{ mariadb_tag }}"
 

docker/base/Dockerfile.j2

@@ -8,7 +8,7 @@ ENV KOLLA_INSTALL_TYPE {{ install_type }}
 
 {% if base_distro in ['fedora', 'centos', 'oraclelinux'] %}
 
-# Turns on galera repos throughout the build
+# Turns on MariaDB repos throughout the build
 COPY mariadb.yum.repo /etc/yum.repos.d/MariaDB.repo
 
 RUN yum install -y http://www.percona.com/redir/downloads/percona-release/redhat/0.1-3/percona-release-0.1-3.noarch.rpm \