Ensure redhat-lsb-core is installed.

tasks/main.yml

@@ -1,10 +1,12 @@
 ---
-# Include variables and define needed variables.
 - name: Include OS-specific variables.
   include_vars: "{{ ansible_os_family }}.yml"
   when: ansible_os_family != "RedHat"
 
-# Include version-specific variables for RedHat.
+- name: Ensure required dependency is installed (RedHat).
+  yum: name=redhat-lsb-core state=installed
+  when: ansible_os_family == "RedHat"
+
 - name: Include OS-specific variables (RedHat).
   include_vars: "{{ ansible_os_family }}-{{ ansible_lsb.major_release }}.yml"
   when: ansible_os_family == "RedHat"

tests/Dockerfile.centos-7

@@ -12,8 +12,6 @@ rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
 rm -f /lib/systemd/system/basic.target.wants/*; \
 rm -f /lib/systemd/system/anaconda.target.wants/*;
 
-RUN yum -y install redhat-lsb-core
-
 # Install Ansible
 RUN yum -y install epel-release
 RUN yum -y install git ansible sudo