Fix mariadbbackup_pkg_name helper for yum

The name of the MariaDB-backup package on yum-based repos is
case-sensitive and has capitals in the name, much like the server
package name.

Fixes sous-chefs#276

CHANGELOG.md

@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ### Fixed
 
+- Fixed `mariadbbackup_pkg_name` helper for yum-based platforms ([#276](https://github.com/sous-chefs/mariadb/issues/276))
 - Fixed replication resource `load_current_value` to use Integers where required
 - Make `server_configuration` and `server_install` resources idempotent ([#265](https://github.com/sous-chefs/mariadb/issues/265))
 

libraries/helpers.rb

@@ -212,10 +212,15 @@ def secure_random
     end
 
     def mariadbbackup_pkg_name
-      if new_resource.version == '10.3'
-        'mariadb-backup'
+      case node['platform_family']
+      when 'rhel', 'fedora', 'amazon'
+        'MariaDB-backup'
       else
-        "mariadb-backup-#{new_resource.version}"
+        if new_resource.version == '10.3'
+          'mariadb-backup'
+        else
+          "mariadb-backup-#{new_resource.version}"
+        end
       end
     end
 

test/cookbooks/test/recipes/galera_configuration.rb

@@ -4,6 +4,12 @@
   version '10.3'
 end
 
+yum_repository 'epel' do
+  mirrorlist "http://mirrors.fedoraproject.org/mirrorlist?repo=epel-#{node['platform_version'].to_i}&arch=$basearch"
+  gpgkey "https://download.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-#{node['platform_version'].to_i}"
+  only_if { platform?('centos') }
+end
+
 mariadb_galera_configuration 'MariaDB Galera Configuration' do
   version '10.3'
   wsrep_sst_method 'mariabackup'